Optical image capturing system

ABSTRACT

An optical image capturing system, sequentially including a first lens element, a second lens element, a third lens element and a fourth lens element from an object side to an image side, is provided. The first lens element has positive refractive power. The second through third lens elements have refractive power. The fourth lens element has negative refractive power. At least one of the image side surface and the object side surface of each of the four lens elements are aspheric. The optical lens elements can increase aperture value and improve the imagining quality for use in compact cameras.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Taiwan Patent Application No.104115662, filed on May 15, 2015, in the Taiwan Intellectual PropertyOffice, the disclosure of which is incorporated herein in its entiretyby reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to an optical image capturing system, andmore particularly to a compact optical image capturing system which canbe applied to electronic products.

2. Description of the Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemis raised gradually. The image sensing device of ordinary photographingcamera is commonly selected from charge coupled device (CCD) orcomplementary metal-oxide semiconductor sensor (CMOS Sensor). Inaddition, as advanced semiconductor manufacturing technology enables theminimization of pixel size of the image sensing device, the developmentof the optical image capturing system directs towards the field of highpixels. Therefore, the requirement for high imaging quality is rapidlyraised.

The traditional optical image capturing system of a portable electronicdevice comes with different designs, including a second-lens or athird-lens design. However, the requirement for the higher pixels andthe requirement for a large aperture of an end user, likefunctionalities of micro filming and night view, or the requirement ofwide view angle of the portable electronic device have been raised. Butthe optical image capturing system with the large aperture design oftenproduces more aberration resulting in the deterioration of quality inperipherical image formation and difficulties of manufacturing, and theoptical image capturing system with wide view angle design increasesdistortion rate in image formation, thus the optical image capturingsystem in prior arts cannot meet the requirement of the higher ordercamera lens module.

Therefore, how to effectively increase quantity of incoming light andview angle of the optical lenses, not only further improves total pixelsand imaging quality for the image formation, but also considers theequity design of the miniaturized optical lenses, becomes a quiteimportant issue.

SUMMARY OF THE INVENTION

The aspect of embodiment of the present disclosure directs to an opticalimage capturing system and an optical image capturing lens which usecombination of refractive powers, convex and concave surfaces offour-piece optical lenses (the convex or concave surface in thedisclosure denotes the geometrical shape of an image-side surface or anobject-side surface of each lens on an optical axis) to increase thequantity of incoming light of the optical image capturing system and theview angle of the optical lenses, and to improve total pixels andimaging quality for image formation, so as to be applied to minimizedelectronic products.

The term and its definition to the lens element parameter in theembodiment of the present invention are shown as below for furtherreference.

The Lens Element Parameter Related to a Length or a Height in the LensElement

A height for image formation of the optical image capturing system isdenoted by HOI. A height of the optical image capturing system isdenoted by HOS. A distance from the object-side surface of the firstlens element to the image-side surface of the fourth lens element isdenoted by InTL. A distance from the image-side surface of the fourthlens element to an image plane is denoted by InB. InTL+InB=HOS. Adistance from an aperture stop (aperture) to an image plane is denotedby InS. A distance from the first lens element to the second lenselement is denoted by In12 (instance). A central thickness of the firstlens element of the optical image capturing system on the optical axisis denoted by TP1 (instance).

The Lens Element Parameter Related to a Material in the Lens Element

An Abbe number of the first lens element in the optical image capturingsystem is denoted by NA1 (instance). A refractive index of the firstlens element is denoted by Nd1 (instance).

The Lens Element Parameter Related to a View Angle in the Lens Element

A view angle is denoted by AF. Half of the view angle is denoted by HAF.A major light angle is denoted by MRA.

The Lens Element Parameter Related to Exit/Entrance Pupil in the LensElement

An entrance pupil diameter of the optical image capturing system isdenoted by HEP. A maximum effective half diameter (EHD) of any surfaceof a single lens element refers to a perpendicular height between anintersection point on the surface of the lens element where the incidentlight with the maximum view angle in the optical system passes throughthe outmost edge of the entrance pupil and the optical axis. Forexample, the maximum effective half diameter of the object-side surfaceof the first lens element is denoted by EHD 11. The maximum effectivehalf diameter of the image-side surface of the first lens element isdenoted by EHD 12. The maximum effective half diameter of theobject-side surface of the second lens element is denoted by EHD 21. Themaximum effective half diameter of the image-side surface of the secondlens element is denoted by EHD 22. The maximum effective half diametersof any surfaces of other lens elements in the optical image capturingsystem are denoted in the similar way.

The Lens Element Parameter Related to a Depth of the Lens Element Shape

A distance in parallel with an optical axis from a maximum effectivediameter position to an axial point on the object-side surface of thefourth lens element is denoted by InRS41 (instance). A distance inparallel with an optical axis from a maximum effective diameter positionto an axial point on the image-side surface of the fourth lens elementis denoted by InRS42 (instance).

The Lens Element Parameter Related to the Lens Element Shape

A critical point C is a tangent point on a surface of a specific lenselement, and the tangent point is tangent to a plane perpendicular tothe optical axis and the tangent point cannot be a crossover point onthe optical axis. To follow the past, a distance perpendicular to theoptical axis between a critical point C31 on the object-side surface ofthe third lens element and the optical axis is HVT31 (instance). Adistance perpendicular to the optical axis between a critical point C32on the image-side surface of the third lens element and the optical axisis HVT32 (instance). A distance perpendicular to the optical axisbetween a critical point C41 on the object-side surface of the fourthlens element and the optical axis is HVT41 (instance). A distanceperpendicular to the optical axis between a critical point C42 on theimage-side surface of the fourth lens element and the optical axis isHVT42 (instance). Distances perpendicular to the optical axis betweencritical points on the object-side surfaces or the image-side surfacesof other lens elements and the optical axis are denoted in the similarway described above.

The object-side surface of the fourth lens element has one inflectionpoint IF411 which is nearest to the optical axis, and the sinkage valueof the inflection point IF411 is denoted by SGI411 (instance). SGI411 isa horizontal shift distance in parallel with the optical axis from anaxial point on the object-side surface of the fourth lens element to theinflection point which is nearest to the optical axis on the object-sidesurface of the fourth lens element. A distance perpendicular to theoptical axis between the inflection point IF411 and the optical axis isHIF411 (instance). The image-side surface of the fourth lens element hasone inflection point IF421 which is nearest to the optical axis and thesinkage value of the inflection point IF421 is denoted by SGI421(instance). SGI421 is a horizontal shift distance in parallel with theoptical axis from an axial point on the image-side surface of the fourthlens element to the inflection point which is nearest to the opticalaxis on the image-side surface of the fourth lens element. A distanceperpendicular to the optical axis between the inflection point IF421 andthe optical axis is HIF421 (instance).

The object-side surface of the fourth lens element has one inflectionpoint IF412 which is the second nearest to the optical axis and thesinkage value of the inflection point IF412 is denoted by SGI412(instance). SGI412 is a horizontal shift distance in parallel with theoptical axis from an axial point on the object-side surface of thefourth lens element to the inflection point which is the second nearestto the optical axis on the object-side surface of the fourth lenselement. A distance perpendicular to the optical axis between theinflection point IF412 and the optical axis is HIF412 (instance). Theimage-side surface of the fourth lens element has one inflection pointIF422 which is the second nearest to the optical axis and the sinkagevalue of the inflection point IF422 is denoted by SGI422 (instance).SGI422 is a horizontal shift distance in parallel with the optical axisfrom an axial point on the image-side surface of the fourth lens elementto the inflection point which is the second nearest to the optical axison the image-side surface of the fourth lens element. A distanceperpendicular to the optical axis between the inflection point IF422 andthe optical axis is HIF422 (instance).

The object-side surface of the fourth lens element has one inflectionpoint IF413 which is the third nearest to the optical axis and thesinkage value of the inflection point IF413 is denoted by SGI413(instance). SGI413 is a horizontal shift distance in parallel with theoptical axis from an axial point on the object-side surface of thefourth lens element to the inflection point which is the third nearestto the optical axis on the object-side surface of the fourth lenselement. A distance perpendicular to the optical axis between theinflection point IF413 and the optical axis is HIF413 (instance). Theimage-side surface of the fourth lens element has one inflection pointIF423 which is the third nearest to the optical axis and the sinkagevalue of the inflection point IF423 is denoted by SGI423 (instance).SGI423 is a horizontal shift distance in parallel with the optical axisfrom an axial point on the image-side surface of the fourth lens elementto the inflection point which is the third nearest to the optical axison the image-side surface of the fourth lens element. A distanceperpendicular to the optical axis between the inflection point IF423 andthe optical axis is HIF423 (instance).

The object-side surface of the fourth lens element has one inflectionpoint IF414 which is the fourth nearest to the optical axis and thesinkage value of the inflection point IF414 is denoted by SGI414(instance). SGI414 is a horizontal shift distance in parallel with theoptical axis from an axial point on the object-side surface of thefourth lens element to the inflection point which is the fourth nearestto the optical axis on the object-side surface of the fourth lenselement. A distance perpendicular to the optical axis between theinflection point IF414 and the optical axis is HIF414 (instance). Theimage-side surface of the fourth lens element has one inflection pointIF424 which is the fourth nearest to the optical axis and the sinkagevalue of the inflection point IF424 is denoted by SGI424 (instance).SGI424 is a horizontal shift distance in parallel with the optical axisfrom an axial point on the image-side surface of the fourth lens elementto the inflection point which is the fourth nearest to the optical axison the image-side surface of the fourth lens element. A distanceperpendicular to the optical axis between the inflection point IF424 andthe optical axis is HIF424 (instance).

The inflection points on the object-side surfaces or the image-sidesurfaces of the other lens elements and the distances perpendicular tothe optical axis thereof or the sinkage values thereof are denoted inthe similar way described above.

The Lens Element Parameter Related to an Aberration

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the range ofthe aberration offset for the view of image formation may be limited to50%-100%. An offset of the spherical aberration is denoted by DFS. Anoffset of the coma aberration is denoted by DFC.

A characteristic diagram of modulation transfer function (MTF) in theoptical image capturing system is used to test and evaluate a contrastratio and a sharpness of image capturing in the system. The verticalcoordinate axis of the characteristic diagram of modulation transferfunction represents a contrast transfer rate (values are from 0 to 1).The horizontal coordinate axis represents a spatial frequency(cycles/mm; lp/mm; line pairs per mm). Theoretically, an ideal imagecapturing system can 100% show the line contrast of a photographedobject. However, the values of the contrast transfer rate at thevertical coordinate axis are smaller than 1 in the actual imagecapturing system, the transfer rate of its comparison value is less thana vertical axis. In addition, comparing to the central region, it isgenerally more difficult to achieve a fine degree of recovery in theedge region of image capturing. The contrast transfer rates (MTF values)with half spatial frequencies (half frequencies) at the optical axis,0.3 field of view and 0.7 field of view on the image plane arerespectively denoted by MTFH0, MTFH3 and MTFH7. The contrast transferrates (MTF values) with full spatial frequencies at the optical axis,0.3 field of view and 0.7 field of view on the image plane arerespectively denoted by MTF0, MTF3 and MTF7. The three fields of viewdescribed above are representative to the centre, the internal field ofview and the external field of view of the lens elements. Thus, they maybe used to evaluate whether the performance of a specific optical imagecapturing system is excellent. The design of the optical image capturingsystem of the present invention mainly corresponds to a pixel size inwhich a sensing device below 1.12 micrometers is includes. Therefore,the half spatial frequencies (half frequencies) and the full spatialfrequencies (full frequencies) of the characteristic diagram ofmodulation transfer function respectively are at least 220 cycles/mm and440 cycles/mm.

The disclosure provides an optical image capturing system, anobject-side surface or an image-side surface of the fourth lens elementhas inflection points, such that the angle of incidence from each fieldof view to the fourth lens element can be adjusted effectively and theoptical distortion and the TV distortion can be corrected as well.Besides, the surfaces of the fourth lens element may have a betteroptical path adjusting ability to acquire better imaging quality.

The disclosure provides an optical image capturing system, in order froman object side to an image side, including a first, second, third,fourth lens elements and an image plane. The first lens element hasrefractive power. An object-side surface and an image-side surface ofthe fourth lens element are aspheric. Focal lengths of the first throughfourth lens elements are f1, f2, f3 and f4 respectively. A focal lengthof the optical image capturing system is f. An entrance pupil diameterof the optical image capturing system is HEP. A distance from anobject-side surface of the first lens element to the image plane is HOS.A distance on the optical axis from the object-side surface of the firstlens element to the image-side surface of the fourth lens element isInTL. A horizontal distance in parallel with the optical axis from acoordinate point on the object-side surface of the first lens element atheight ½ HEP to the image plane is ETL. A horizontal distance inparallel with the optical axis from a coordinate point on theobject-side surface of the first lens element at height ½ HEP to acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP is EIN. The following relations are satisfied:1.2≤f/HEP≤6.0, 0.5≤HOS/f≤3.0 and 0.2≤EIN/ETL<1.

The disclosure provides another optical image capturing system, in orderfrom an object side to an image side, including a first, second, thirdand fourth lens elements. The first lens element has positive refractivepower, and the position near the optical axis on an object-side surfaceof the first lens element may be a convex surface. The second lenselement has refractive power. The third lens element has refractivepower. The fourth lens element has negative refractive power, and anobject-side surface and an image-side surface of the fourth lens elementare aspheric. At least two lens elements among the first through fourthlens elements respectively have at least one inflection point on atleast one surface thereof. At least one of the second through fourthlens elements has positive refractive power. Focal lengths of the firstthrough fourth lens elements are f1, f2, f3 and f4 respectively. A focallength of the optical image capturing system is f. An entrance pupildiameter of the optical image capturing system is HEP. A distance froman object-side surface of the first lens element to the image plane isHOS. A distance on the optical axis from the object-side surface of thefirst lens element to the image-side surface of the fourth lens elementis InTL. A horizontal distance in parallel with the optical axis from acoordinate point on the object-side surface of the first lens element atheight ½ HEP to the image plane is ETL. A horizontal distance inparallel with the optical axis from a coordinate point on theobject-side surface of the first lens element at height ½ HEP to acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP is EIN. The following relations are satisfied:1.2≤f/HEP≤6.0, 0.5≤HOS/f≤3.0 and 0.2≤EIN/ETL<1.

The disclosure provides another optical image capturing system, in orderfrom an object side to an image side, including a first, second, third,fourth lens elements and an image plane. The fourth lens element has atleast one inflection point on at least one surface among an object-sidesurface and an image-side surface, wherein the optical image capturingsystem consists of four lens elements with refractive power and at leasttwo lens elements among the first through third lens elementsrespectively have at least one inflection point on at least one surfacethereof. The first lens element has positive refractive power. Thesecond lens element has refractive power. The third lens element hasrefractive power. The fourth lens element has negative refractive power.An object-side surface and an image-side surface of the fourth lenselement are aspheric. Focal lengths of the first through fourth lenselements are f1, f2, f3 and f4, respectively. A focal length of theoptical image capturing system is f. An entrance pupil diameter of theoptical image capturing system is HEP. A distance from an object-sidesurface of the first lens element to the image plane is HOS. A distanceon the optical axis from the object-side surface of the first lenselement to the image-side surface of the fourth lens element is InTL Ahorizontal distance in parallel with the optical axis from a coordinatepoint on the object-side surface of the first lens element at height ½HEP to the image plane is ETL. A horizontal distance in parallel withthe optical axis from a coordinate point on the object-side surface ofthe first lens element at height ½ HEP to a coordinate point on theimage-side surface of the fourth lens element at height ½ HEP is EIN.The following relations are satisfied: 1.2≤f/HEP≤3.5, 0.5≤HOS/f≤3.0 and0.2≤EIN/ETL<1.

A thickness of a single lens element at height of ½ entrance pupildiameter (HEP) particularly affects the corrected aberration of commonarea of each field of view of light and the capability of correctingoptical path difference between each field of view of light in the scopeof ½ entrance pupil diameter (HEP). The capability of aberrationcorrection is enhanced if the thickness becomes greater, but thedifficulty for manufacturing is also increased at the same time.Therefore, it is necessary to control the thickness of a single lenselement at height of ½ entrance pupil diameter (HEP), in particular tocontrol the ratio relation (ETP/TP) of the thickness (ETP) of the lenselement at height of ½ entrance pupil diameter (HEP) to the thickness(TP) of the lens element to which the surface belongs on the opticalaxis. For example, the thickness of the first lens element at height of½ entrance pupil diameter (HEP) is denoted by ETP1. The thickness of thesecond lens element at height of ½ entrance pupil diameter (HEP) isdenoted by ETP2. The thicknesses of other lens elements are denoted inthe similar way. A sum of ETP1 to ETP4 described above is SETP. Theembodiments of the present invention may satisfy the following relation:0.3≤SETP/EIN≤0.8.

In order to enhance the capability of aberration correction and reducethe difficulty for manufacturing at the same time, it is particularlynecessary to control the ratio relation (ETP/TP) of the thickness (ETP)of the lens element at height of ½ entrance pupil diameter (HEP) to thethickness (TP) of the lens element on the optical axis lens. Forexample, the thickness of the first lens element at height of ½ entrancepupil diameter (HEP) is denoted by ETP1. The thickness of the first lenselement on the optical axis is TP1. The ratio between both of them isETP1/TP1. The thickness of the second lens element at height of ½entrance pupil diameter (HEP) is denoted by ETP2. The thickness of thesecond lens element on the optical axis is TP2. The ratio between bothof them is ETP2/TP2. The ratio relations of the thicknesses of otherlens element in the optical image capturing system at height of ½entrance pupil diameter (HEP) to the thicknesses (TP) of the lenselements on the optical axis lens are denoted in the similar way. Theembodiments of the present invention may satisfy the following relation:0.5≤ETP/TP≤3.

A horizontal distance between two adjacent lens elements at height of ½entrance pupil diameter (HEP) is denoted by ED. The horizontal distance(ED) described above is in parallel with the optical axis of the opticalimage capturing system and particularly affects the corrected aberrationof common area of each field of view of light and the capability ofcorrecting optical path difference between each field of view of lightat the position of ½ entrance pupil diameter (HEP). The capability ofaberration correction may be enhanced if the horizontal distance becomesgreater, but the difficulty for manufacturing is also increased and thedegree of ‘miniaturization’ to the length of the optical image capturingsystem is restricted. Thus, it is essential to control the horizontaldistance (ED) between two specific adjacent lens elements at height of ½entrance pupil diameter (HEP).

In order to enhance the capability of aberration correction and reducethe difficulty for ‘miniaturization’ to the length of the optical imagecapturing system at the same time, it is particularly necessary tocontrol the ratio relation (ED/IN) of the horizontal distance (ED)between the two adjacent lens elements at height of ½ entrance pupildiameter (HEP) to the horizontal distance (IN) between the two adjacentlens elements on the optical axis. For example, the horizontal distancebetween the first lens element and the second lens element at height of½ entrance pupil diameter (HEP) is denoted by ED12. The horizontaldistance between the first lens element and the second lens element onthe optical axis is IN12. The ratio between both of them is ED12/IN12.The horizontal distance between the second lens element and the thirdlens element at height of ½ entrance pupil diameter (HEP) is denoted byED23. The horizontal distance between the second lens element and thethird lens element on the optical axis is IN23. The ratio between bothof them is ED23/IN23. The ratio relations of the horizontal distancesbetween other two adjacent lens elements in the optical image capturingsystem at height of ½ entrance pupil diameter (HEP) to the horizontaldistances between the two adjacent lens elements on the optical axis aredenoted in the similar way.

A horizontal distance in parallel with the optical axis from acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP to the image plane is EBL. A horizontal distance inparallel with the optical axis from an axial point on the image-sidesurface of the fourth lens element to the image plane is BL. Theembodiments of the present invention enhance the capability ofaberration correction and reserve space for accommodating other opticalelements. The following relation may be satisfied: 0.5≤EBL/BL<1. Theoptical image capturing system may further include a light filtrationelement. The light filtration element is located between the fourth lenselement and the image plane. A distance in parallel with the opticalaxis from a coordinate point on the image-side surface of the fourthlens element at height ½ HEP to the light filtration element is EIR. Adistance in parallel with the optical axis from an axial point on theimage-side surface of the fourth lens element to the light filtrationelement is PIR. The embodiments of the present invention may satisfy thefollowing relation: 0.2≤EIR/PIR≤0.8.

The optical image capturing system described above may be configured toform the image on the image sensing device which is shorter than 1/1.2inch in diagonal length. The preferred size of the image sensing deviceis 1/2.3 inch. The pixel size of the image sensing device is smallerthan 1.4 micrometers (μm), preferably the pixel size thereof is smallerthan 1.12 micrometers (μm). The best pixel size thereof is smaller than0.9 micrometers (μm). Furthermore, the optical image capturing system isapplicable to the image sensing device with aspect ratio of 16:9.

The optical image capturing system described above is applicable to thedemand of video recording with above millions or ten millions-pixels(e.g. 4K2K or called UHD, QHD) and leads to a good imaging quality.

The height of optical system (HOS) may be reduced to achieve theminimization of the optical image capturing system when the absolutevalue of f1 is larger than f4 (|f1|>f4).

When |f2|+|f3|>|f1|+|f4| is satisfied with above relations, at least oneof the second through third lens elements may have weak positiverefractive power or weak negative refractive power. The weak refractivepower indicates that an absolute value of the focal length of a specificlens element is greater than 10. When at least one of the second throughthird lens elements has the weak positive refractive power, the positiverefractive power of the first lens element can be shared, such that theunnecessary aberration will not appear too early. On the contrary, whenat least one of the second through third lens elements has the weaknegative refractive power, the aberration of the optical image capturingsystem can be corrected and fine tuned.

The fourth lens element may have negative refractive power and a concaveimage-side surface. Hereby, the back focal length is reduced for keepingthe miniaturization, to miniaturize the lens element effectively. Inaddition, at least one of the object-side surface and the image-sidesurface of the fourth lens element may have at least one inflectionpoint, such that the angle of incident with incoming light from anoff-axis field of view can be suppressed effectively and the aberrationin the off-axis field of view can be corrected further.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed structure, operating principle and effects of the presentdisclosure will now be described in more details hereinafter withreference to the accompanying drawings that show various embodiments ofthe present disclosure as follows.

FIG. 1A is a schematic view of the optical image capturing systemaccording to the first embodiment of the present application.

FIG. 1B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the first embodimentof the present application.

FIG. 1C is a characteristic diagram of modulation transfer according tothe first embodiment of the present application.

FIG. 2A is a schematic view of the optical image capturing systemaccording to the second embodiment of the present application.

FIG. 2B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the secondembodiment of the present application.

FIG. 2C is a characteristic diagram of modulation transfer according tothe second embodiment of the present application.

FIG. 3A is a schematic view of the optical image capturing systemaccording to the third embodiment of the present application.

FIG. 3B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the third embodimentof the present application.

FIG. 3C is a characteristic diagram of modulation transfer according tothe third embodiment of the present application.

FIG. 4A is a schematic view of the optical image capturing systemaccording to the fourth embodiment of the present application.

FIG. 4B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the fourthembodiment of the present application.

FIG. 4C is a characteristic diagram of modulation transfer according tothe fourth embodiment of the present application.

FIG. 5A is a schematic view of the optical image capturing systemaccording to the fifth embodiment of the present application.

FIG. 5B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the fifth embodimentof the present application.

FIG. 5C is a characteristic diagram of modulation transfer according tothe fifth embodiment of the present application.

FIG. 6A is a schematic view of the optical image capturing systemaccording to the sixth embodiment of the present application.

FIG. 6B is longitudinal spherical aberration curves, astigmatic fieldcurves, and an optical distortion grid of the optical image capturingsystem in the order from left to right according to the sixth embodimentof the present application.

FIG. 6C is a characteristic diagram of modulation transfer according tothe sixth embodiment of the present application.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of thepresent disclosure, examples of which are illustrated in theaccompanying drawings. Therefore, it is to be understood that theforegoing is illustrative of exemplary embodiments and is not to beconstrued as limited to the specific embodiments disclosed, and thatmodifications to the disclosed exemplary embodiments, as well as otherexemplary embodiments, are intended to be included within the scope ofthe appended claims. These embodiments are provided so that thisdisclosure will be thorough and complete, and will fully convey theinventive concept to those skilled in the art. The relative proportionsand ratios of elements in the drawings may be exaggerated or diminishedin size for the sake of clarity and convenience in the drawings, andsuch arbitrary proportions are only illustrative and not limiting in anyway. The same reference numbers are used in the drawings and thedescription to refer to the same or like parts.

It will be understood that, although the terms ‘first’, ‘second’,‘third’, etc., may be used herein to describe various elements, theseelements should not be limited by these terms. The terms are used onlyfor the purpose of distinguishing one component from another component.Thus, a first element discussed below could be termed a second elementwithout departing from the teachings of embodiments. As used herein, theterm “or” includes any and all combinations of one or more of theassociated listed items.

An optical image capturing system, in order from an object side to animage side, includes a first, second, third and fourth lens elementswith refractive power. The optical image capturing system may furtherinclude an image sensing device which is disposed on an image plane.

The optical image capturing system uses five sets of wavelengths whichare 470 nm, 510 nm, 555 nm, 610 nm and 650 nm, respectively, wherein 555nm is served as the primary reference wavelength and is served as theprimary reference wavelength of technical features.

A ratio of the focal length f of the optical image capturing system to afocal length fp of each of lens elements with positive refractive poweris PPR. A ratio of the focal length f of the optical image capturingsystem to a focal length fn of each of lens elements with negativerefractive power is NPR. A sum of the PPR of all lens elements withpositive refractive power is ΣPPR. A sum of the NPR of all lens elementswith negative refractive powers is ΣNPR. It is beneficial to control thetotal refractive power and the total length of the optical imagecapturing system when following conditions are satisfied:0.5≤ΣPPR/|ΣNPR|≤4.5. Preferably, the following relation may besatisfied: 1≤ΣPPR/|ΣNPR|≤3.5.

The height of the optical image capturing system is HOS. It willfacilitate the manufacturing of miniaturized optical image capturingsystem which may form images with ultra high pixels when the specificratio value of HOS/f tends to 1.

A sum of a focal length fp of each lens element with positive refractivepower is ΣPP. A sum of a focal length fn of each lens element withnegative refractive power is ΣNP. In one embodiment of the optical imagecapturing system of the present disclosure, the following relations aresatisfied: 0<ΣPP≤200 and f1/ΣPP≤0.85. Preferably, the followingrelations may be satisfied: 0<ΣPP≤150 and 0.01≤f1/ΣPP≤0.7. Hereby, it'sbeneficial to control the focus ability of the optical image capturingsystem and allocate the positive refractive power of the optical imagecapturing system appropriately, so as to suppress the significantaberration generating too early.

The first lens element may have positive refractive power, and it has aconvex object-side surface. Hereby, strength of the positive refractivepower of the first lens element can be fined-tuned, so as to reduce thetotal length of the optical image capturing system.

The second lens element may have negative refractive power. Hereby, theaberration generated by the first lens element can be corrected.

The third lens element may have positive refractive power. Hereby, thepositive refractive power of the first lens element can be shared.

The fourth lens element may have negative refractive power and a concaveimage-side surface. Hereby, the back focal length is reduced for keepingthe miniaturization, to miniaturize the lens element effectively. Inaddition, at least one of the object-side surface and the image-sidesurface of the fourth lens element may have at least one inflectionpoint, such that the angle of incident with incoming light from anoff-axis field of view can be suppressed effectively and the aberrationin the off-axis field of view can be corrected further. Preferably, eachof the object-side surface and the image-side surface may have at leastone inflection point.

The optical image capturing system may further include an image sensingdevice which is disposed on an image plane. Half of a diagonal of aneffective detection field of the image sensing device (imaging height orthe maximum image height of the optical image capturing system) is HOI.A distance on the optical axis from the object-side surface of the firstlens element to the image plane is HOS. The following relations aresatisfied: HOS/HOI≤3 and 0.5≤HOS/f≤3.0. Preferably, the followingrelations may be satisfied: 1≤HOS/HOI≤2.5 and 1≤HOS/f≤2. Hereby, theminiaturization of the optical image capturing system can be maintainedeffectively, so as to be carried by lightweight portable electronicdevices.

In addition, in the optical image capturing system of the disclosure,according to different requirements, at least one aperture stop may bearranged for reducing stray light and improving the imaging quality.

In the optical image capturing system of the disclosure, the aperturestop may be a front or middle aperture. The front aperture is theaperture stop between a photographed object and the first lens element.The middle aperture is the aperture stop between the first lens elementand the image plane. If the aperture stop is the front aperture, alonger distance between the exit pupil and the image plane of theoptical image capturing system can be formed, such that more opticalelements can be disposed in the optical image capturing system and theefficiency of receiving images of the image sensing device can beraised. If the aperture stop is the middle aperture, the view angle ofthe optical image capturing system can be expended, such that theoptical image capturing system has the same advantage that is owned bywide angle cameras. A distance from the aperture stop to the image planeis InS. The following relation is satisfied: 0.5≤InS/HOS≤1.1.Preferably, the following relation may be satisfied: 0.8≤InS/HOS≤1.Hereby, features of maintaining the minimization for the optical imagecapturing system and having wide-angle are available simultaneously.

In the optical image capturing system of the disclosure, a distance fromthe object-side surface of the first lens element to the image-sidesurface of the fourth lens element is InTL. A sum of central thicknessesof all lens elements with refractive power on the optical axis is ΣTP.The following relation is satisfied: 0.45≤ΣTP/InTL≤0.95. Preferably, thefollowing relation may be satisfied: 0.6≤ΣTP/InTL≤0.9. Hereby, contrastratio for the image formation in the optical image capturing system anddefect-free rate for manufacturing the lens element can be givenconsideration simultaneously, and a proper back focal length is providedto dispose other optical components in the optical image capturingsystem.

A curvature radius of the object-side surface of the first lens elementis R1. A curvature radius of the image-side surface of the first lenselement is R2. The following relation is satisfied: 0.01≤|R1/R2|≤0.5.Hereby, the first lens element may have proper strength of the positiverefractive power, so as to avoid the longitudinal spherical aberrationto increase too fast. Preferably, the following relation may besatisfied: 0.01≤|R1/R2|≤0.4.

A curvature radius of the object-side surface of the fourth lens elementis R9. A curvature radius of the image-side surface of the fourth lenselement is R10. The following relation is satisfied:−200<(R7−R8)/(R7+R8)<30. Hereby, the astigmatism generated by theoptical image capturing system can be corrected beneficially.

A distance between the first lens element and the second lens element onthe optical axis is IN12. The following relation is satisfied:0<IN12/f≤0.25. Preferably, the following relation may be satisfied:0.01≤IN12/f≤0.20. Hereby, the chromatic aberration of the lens elementscan be improved, such that the performance can be increased.

A distance between the second lens element and the third lens element onthe optical axis is IN23. The following relation is satisfied:0<IN23/f≤≤0.25. Preferably, the following relation may be satisfied:0.01≤IN23/f≤0.20. Hereby, the performance of the lens elements can beimproved.

A distance between the third lens element and the fourth lens element onthe optical axis is IN34. The following relation is satisfied:0≤IN34/f≤0.25. Preferably, the following relation may be satisfied:0.001≤IN34/f≤0.20. Hereby, the performance of the lens elements can beimproved.

Central thicknesses of the first lens element and the second lenselement on the optical axis are TP1 and TP2, respectively. The followingrelation is satisfied: 1≤(TP1+IN12)/TP2≤10. Hereby, the sensitivityproduced by the optical image capturing system can be controlled, andthe performance can be increased.

Central thicknesses of the third lens element and the fourth lenselement on the optical axis are TP3 and TP4, respectively, and adistance between the aforementioned two lens elements on the opticalaxis is IN34. The following relation is satisfied: 0.2≤(TP4+IN34)/TP4≤3.Hereby, the sensitivity produced by the optical image capturing systemcan be controlled and the total height of the optical image capturingsystem can be reduced.

A distance between the second lens element and the third lens element onthe optical axis is IN23. A total sum of distances from the first lenselement to the fourth lens element on the optical axis is ΣTP. Thefollowing relation is satisfied: 0.01≤IN23/(TP2+IN23+TP3)≤0.5.Preferably, the following relation may be satisfied:0.05≤IN23/(TP2+IN23+TP3)≤0.4. Hereby, the aberration generated by theprocess of moving the incident light can be adjusted slightly layer uponlayer, and the total height of the optical image capturing system can bereduced.

In the optical image capturing system of the disclosure, a distance inparallel with an optical axis from a maximum effective diameter positionto an axial point on the object-side surface 142 of the fourth lenselement is InRS41 (InRS41 is positive if the horizontal displacement istoward the image-side surface, or InRS41 is negative if the horizontaldisplacement is toward the object-side surface). A distance in parallelwith an optical axis from a maximum effective diameter position to anaxial point on the image-side surface 144 of the fourth lens element isInRS42. A central thickness of the fourth lens element 140 on theoptical axis is TP4. The following relations are satisfied: −1mm≤InRS41≤1 mm, −1 mm≤InRS42≤1 mm, 1 mm≤|InRS41|+|InRS42|≤2 mm,0.01≤|InRS41|/TP4≤10 and 0.01≤|InRS42|/TP4≤10. Hereby, the maximumeffective diameter position between both surfaces of the fourth lenselement can be controlled, so as to facilitate the aberration correctionof peripheral field of view of the optical image capturing system andmaintain its miniaturization effectively.

In the optical image capturing system of the disclosure, a distance inparallel with an optical axis from an inflection point on theobject-side surface of the fourth lens element which is nearest to theoptical axis to an axial point on the object-side surface of the fourthlens element is denoted by SGI411. A distance in parallel with anoptical axis from an inflection point on the image-side surface of thefourth lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the fourth lens element is denoted bySGI421. The following relations are satisfied: 0<SGI411/(SGI411+TP4)≤0.9and 0<SGI421/(SGI421+TP4)≤0.9. Preferably, the following relations maybe satisfied: 0.01<SGI411/(SGI411+TP4)≤0.7 and0.01<SGI421/(SGI421+TP4)≤0.7.

A distance in parallel with the optical axis from the inflection pointon the object-side surface of the fourth lens element which is thesecond nearest to the optical axis to an axial point on the object-sidesurface of the fourth lens element is denoted by SGI412. A distance inparallel with an optical axis from an inflection point on the image-sidesurface of the fourth lens element which is the second nearest to theoptical axis to an axial point on the image-side surface of the fourthlens element is denoted by SGI422. The following relations aresatisfied: 0<SGI412/(SGI412+TP4)≤0.9 and 0<SGI422/(SGI422+TP4)≤0.9.Preferably, the following relations may be satisfied:0.1≤SGI412/(SGI412+TP4)≤0.8 and 0.1≤SGI422/(SGI422+TP4)≤0.8.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which isnearest to the optical axis and the optical axis is denoted by HIF411. Adistance perpendicular to the optical axis between an inflection pointon the image-side surface of the fourth lens element which is nearest tothe optical axis and an axial point on the image-side surface of thefourth lens element is denoted by HIF421. The following relations aresatisfied: 0.01≤HIF411/HOI≤0.9 and 0.01≤HIF421/HOI≤0.9. Preferably, thefollowing relations may be satisfied: 0.09≤HIF411/HOI≤0.5 and0.09≤HIF421/HOI≤0.5.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which is thesecond nearest to the optical axis and the optical axis is denoted byHIF412. A distance perpendicular to the optical axis between an axialpoint on the image-side surface of the fourth lens element and aninflection point on the image-side surface of the fourth lens elementwhich is the second nearest to the optical axis is denoted by HIF422.The following relations are satisfied: 0.01≤HIF412/HOI≤0.9 and0.01≤HIF422/HOI≤0.9. Preferably, the following relations may besatisfied: 0.09≤HIF412/HOI≤0.8 and 0.09≤HIF422/HOI≤0.8.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which is thethird nearest to the optical axis and the optical axis is denoted byHIF413. A distance perpendicular to the optical axis between an axialpoint on the image-side surface of the fourth lens element and aninflection point on the image-side surface of the fourth lens elementwhich is the third nearest to the optical axis is denoted by HIF423. Thefollowing relations are satisfied: 0.001 mm≤|HIF413|≤5 mm and 0.001mm≤|HIF423|≤5 mm. Preferably, the following relations may be satisfied:0.1 mm≤|HIF423|≤3.5 mm and 0.1 mm≤|HIF413|≤3.5 mm.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which is thefourth nearest to the optical axis and the optical axis is denoted byHIF414. A distance perpendicular to the optical axis between an axialpoint on the image-side surface of the fourth lens element and aninflection point on the image-side surface of the fourth lens elementwhich is the fourth nearest to the optical axis is denoted by HIF424.The following relations are satisfied: 0.001 mm≤|HIF414|≤5 mm and 0.001mm≤|HIF424|≤5 mm. Preferably, the following relations may be satisfied:0.1 mm≤|HIF424|≤3.5 mm and 0.1 mm≤|HIF414|≤3.5 mm.

In one embodiment of the optical image capturing system of the presentdisclosure, the chromatic aberration of the optical image capturingsystem can be corrected by alternatively arranging the lens elementswith large Abbe number and small Abbe number.

The above Aspheric formula is:z=ch ²/[1+[1−(k+1)c ² h ²]^(0.5) ]+A4h ⁴ +A6h ⁶ +A8h ⁸ +A10h ¹⁰ +A12h ¹²+A14h ¹⁴ +A16h ¹⁶ +A ¹⁸ h ¹⁸ +A20h ²⁰+ . . .   (1),where z is a position value of the position along the optical axis andat the height h which reference to the surface apex; k is the coniccoefficient, c is the reciprocal of curvature radius, and A4, A6, A8,A10, A12, A14, A16, A18, and A20 are high order aspheric coefficients.

The optical image capturing system provided by the disclosure, the lenselements may be made of glass or plastic material. If plastic materialis adopted to produce the lens elements, the cost of manufacturing willbe lowered effectively. If lens elements are made of glass, the heateffect can be controlled and the designed space arranged for therefractive power of the optical image capturing system can be increased.Besides, the object-side surface and the image-side surface of the firstthrough fourth lens elements may be aspheric, so as to obtain morecontrol variables. Comparing with the usage of traditional lens elementmade by glass, the number of lens elements used can be reduced and theaberration can be eliminated. Thus, the total height of the opticalimage capturing system can be reduced effectively.

In addition, in the optical image capturing system provided by thedisclosure, if the lens element has a convex surface, the surface of thelens element is convex adjacent to the optical axis. If the lens elementhas a concave surface, the surface of the lens element is concaveadjacent to the optical axis.

Besides, in the optical image capturing system of the disclosure,according to different requirements, at least one aperture may bearranged for reducing stray light and improving the imaging quality.

The optical image capturing system of the disclosure can be adapted tothe optical image capturing system with automatic focus if required.With the features of a good aberration correction and a high quality ofimage formation, the optical image capturing system can be used invarious application fields.

The optical image capturing system of the disclosure can include adriving module according to the actual requirements. The driving modulemay be coupled with the lens elements to enable the lens elementsproducing displacement. The driving module described above may be thevoice coil motor (VCM) which is applied to move the lens to focus, ormay be the optical image stabilization (OIS) which is applied to reducethe distortion frequency owing to the vibration of the lens whileshooting.

According to the above embodiments, the specific embodiments withfigures are presented in detail as below.

The First Embodiment (Embodiment 1)

Please refer to FIG. 1A, FIG. 1B, and FIG. 1C, FIG. 1A is a schematicview of the optical image capturing system according to the firstembodiment of the present application, FIG. 1B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the first embodiment of the present application, andFIG. 1C is a characteristic diagram of modulation transfer according tothe first embodiment of the present application. As shown in FIG. 1A, inorder from an object side to an image side, the optical image capturingsystem includes an aperture 1, a first lens element 110, a second lenselement 120, a third lens element 130, a fourth lens element 140, anIR-bandstop filter 170, an image plane 180, and an image sensing device190.

The first lens element 110 has positive refractive power and it is madeof plastic material. The first lens element 110 has a convex object-sidesurface 112 and a concave image-side surface 114, both of theobject-side surface 112 and the image-side surface 114 are aspheric, andthe object-side surface 112 and the image-side surface 114 have aninflection point respectively. A thickness of the first lens element onthe optical axis is TP1. A thickness of the first lens element at heightof ½ entrance pupil diameter (HEP) is denoted by ETP1.

A distance in parallel with an optical axis from an inflection point onthe object-side surface of the first lens element which is nearest tothe optical axis to an axial point on the object-side surface of thefirst lens element is denoted by SGI111. A distance in parallel with anoptical axis from an inflection point on the image-side surface of thefirst lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the first lens element is denoted bySGI121. The following relations are satisfied: SGI111=0.2008 mm,SGI121=0.0113 mm, |SGI111|/(|SGI111|+TP1)=0.3018 and|SGI121|/(|SGI121|+TP1)=0.0238°.

A distance perpendicular to the optical axis from the inflection pointon the object-side surface of the first lens element which is nearest tothe optical axis to an axial point on the object-side surface of thefirst lens element is denoted by HIF111. A distance perpendicular to theoptical axis from the inflection point on the image-side surface of thefirst lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the first lens element is denoted byHIF121. The following relations are satisfied: HIF111=0.7488 mm,HIF121=0.4451 mm, HIF111/HOI=0.2552 and HIF121/HOI=0.1517.

The second lens element 120 has positive refractive power and it is madeof plastic material. The second lens element 120 has a concaveobject-side surface 122 and a convex image-side surface 124, and both ofthe object-side surface 122 and the image-side surface 124 are aspheric.The object-side surface 122 has an inflection point. A thickness of thesecond lens element on the optical axis is TP2. A thickness of thesecond lens element at height of ½ entrance pupil diameter (HEP) isdenoted by ETP2.

A distance in parallel with an optical axis from an inflection point onthe object-side surface of the second lens element which is nearest tothe optical axis to an axial point on the object-side surface of thesecond lens element is denoted by SGI211. A distance in parallel with anoptical axis from an inflection point on the image-side surface of thesecond lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the second lens element is denoted bySGI221. The following relations are satisfied: SGI211=−0.1791 mm and|SGI211|/(|SGI211|+TP2)=0.3109.

A distance perpendicular to the optical axis from the inflection pointon the object-side surface of the second lens element which is nearestto the optical axis to an axial point on the object-side surface of thesecond lens element is denoted by HIF211. A distance perpendicular tothe optical axis from the inflection point on the image-side surface ofthe second lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the second lens element is denoted byHIF221. The following relations are satisfied: HIF211=0.8147 mm andHIF211/HOI=0.2777.

The third lens element 130 has negative refractive power and it is madeof plastic material. The third lens element 130 has a concaveobject-side surface 132 and a convex image-side surface 134, and both ofthe object-side surface 132 and the image-side surface 134 are aspheric.The image-side surface 134 has an inflection point. A thickness of thethird lens element on the optical axis is TP3. A thickness of the thirdlens element at height of ½ entrance pupil diameter (HEP) is denoted byETP3.

A distance in parallel with an optical axis from an inflection point onthe object-side surface of the third lens element which is nearest tothe optical axis to an axial point on the object-side surface of thethird lens element is denoted by SGI311. A distance in parallel with anoptical axis from an inflection point on the image-side surface of thethird lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the third lens element is denoted bySGI321. The following relations are satisfied: SGI321=−0.1647 mm and|SGI321|/(|SGI321|+TP3)=0.1884.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the third lens element which isnearest to the optical axis and the optical axis is denoted by HIF311. Adistance perpendicular to the optical axis from the inflection point onthe image-side surface of the third lens element which is nearest to theoptical axis to an axial point on the image-side surface of the thirdlens element is denoted by HIF321. The following relations aresatisfied: HIF321=0.7269 mm and HIF321/HOI=0.2477.

The fourth lens element 140 has negative refractive power and it is madeof plastic material. The fourth lens element 140 has a convexobject-side surface 142 and a concave image-side surface 144, both ofthe object-side surface 142 and the image-side surface 144 are aspheric,the object-side surface 142 has two inflection points and the image-sidesurface 144 has an inflection point. A thickness of the fourth lenselement on the optical axis is TP4. A thickness of the fourth lenselement at height of ½ entrance pupil diameter (HEP) is denoted by ETP4.

A distance in parallel with an optical axis from an inflection point onthe object-side surface of the fourth lens element which is nearest tothe optical axis to an axial point on the object-side surface of thefourth lens element is denoted by SGI411. A distance in parallel with anoptical axis from an inflection point on the image-side surface of thefourth lens element which is nearest to the optical axis to an axialpoint on the image-side surface of the fourth lens element is denoted bySGI421. The following relations are satisfied: SGI411=0.0137 mm,SGI421=0.0922 mm, |SGI411|/(|SGI411|+TP4)=0.0155 and|SGI421|/(|SGI421|+TP4)=0.0956.

A distance in parallel with the optical axis from an inflection point onthe object-side surface of the fourth lens element which is the secondnearest to the optical axis to an axial point on the object-side surfaceof the fourth lens element is denoted by SGI412. The following relationsare satisfied: SGI412=−0.1518 mm and |SGI412|/(|SGI412|+TP4)=0.1482.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which isnearest to the optical axis and the optical axis is denoted by HIF411. Adistance perpendicular to the optical axis between the inflection pointon the image-side surface of the fourth lens element which is nearest tothe optical axis and the optical axis is denoted by HIF421. Thefollowing relations are satisfied: HIF411=0.2890 mm, HIF421=0.5794 mm,HIF411/HOI=0.0985 and HIF421/HOI=0.1975.

A distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the fourth lens element which is thesecond nearest to the optical axis and the optical axis is denoted byHIF412. The following relations are satisfied: HIF412=1.3328 mm andHIF412/HOI=0.4543.

A horizontal distance in parallel with the optical axis from acoordinate point on the object-side surface of the first lens element atheight ½ HEP to the image plane is ETL. A horizontal distance inparallel with the optical axis from a coordinate point on theobject-side surface of the first lens element at height ½ HEP to acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP is EIN. The following relations are satisfied: ETL=4.213mm, EIN=3.107 mm and EIN/ETL=0.737.

The present embodiment satisfies the following relations: ETP1=0.260 mm,ETP2=0.287 mm, ETP3=0.810 mm and ETP4=0.994 mm. A sum of ETP1 to ETP4described above SETP=2.351 mm. TP1=0.46442 mm, TP2=0.39686 mm,TP3=0.70989 mm and TP4=0.87253 mm. A sum of TP1 to TP4 described aboveSTP=2.4437 mm. SETP/STP=0.96206.

The present embodiment particularly controls the ratio relation (ETP/TP)of the thickness (ETP) of each lens element at height of ½ entrancepupil diameter (HEP) to the thickness (TP) of the lens element to whichthe surface belongs on the optical axis in order to achieve a balancebetween manufacturability and capability of aberration correction. Thefollowing relations are satisfied: ETP1/TP1=0.560, ETP2/TP2=0.722,ETP3/TP3=1.140 and ETP4/TP4=1.139.

The present embodiment controls a horizontal distance between each twoadjacent lens elements at height of ½ entrance pupil diameter (HEP) toachieve a balance between the degree of miniaturization for the lengthof the optical image capturing system HOS, the manufacturability and thecapability of aberration correction. The ratio relation (ED/IN) of thehorizontal distance (ED) between the two adjacent lens elements atheight of ½ entrance pupil diameter (HEP) to the horizontal distance(IN) between the two adjacent lens elements on the optical axis isparticularly controlled. The following relations are satisfied: ahorizontal distance in parallel with the optical axis between the firstlens element and the second lens element at height of ½ entrance pupildiameter (HEP) ED12=0.230 mm; a horizontal distance in parallel with theoptical axis between the second lens element and the third lens elementat height of ½ entrance pupil diameter (HEP) ED23=0.042 mm; a horizontaldistance in parallel with the optical axis between the third lenselement and the fourth lens element at height of ½ entrance pupildiameter (HEP) ED34=0.485 mm.

The horizontal distance between the first lens element and the secondlens element on the optical axis IN12=0.382 mm. The ratio between bothof them ED12/IN12=0.604. The horizontal distance between the second lenselement and the third lens element on the optical axis IN23=0.070 mm.The ratio between both of them ED23/IN23=0.597. The horizontal distancebetween the third lens element and the fourth lens element on theoptical axis IN34=0.286 mm. The ratio between both of themED34/IN34=1.692.

A horizontal distance in parallel with the optical axis from acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP to the image plane EBL=1.106 mm. A horizontal distance inparallel with the optical axis from an axial point on the image-sidesurface of the fourth lens element to the image plane BL=1.2428 mm. Theembodiment of the present invention may satisfy the following relation:EBL/BL=0.8899. In the present invention, a distance in parallel with theoptical axis from a coordinate point on the image-side surface of thefourth lens element at height ½ HEP to the IR-bandstop filter EIR=0.076mm. A distance in parallel with the optical axis from an axial point onthe image-side surface of the fourth lens element to the IR-bandstopfilter PIR=0.213 mm. The following relation is satisfied: EIR/PIR=0.357.

The IR-bandstop filter 170 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 140 and the image plane 180.

In the optical image capturing system of the first embodiment, a focallength of the optical image capturing system is f, an entrance pupildiameter of the optical image capturing system is HEP, and half of amaximal view angle of the optical image capturing system is HAF. Thedetailed parameters are shown as below: f=3.4375 mm, f/HEP=2.23,HAF=39.69° and tan(HAF)=0.8299.

In the optical image capturing system of the first embodiment, a focallength of the first lens element 110 is f1 and a focal length of thefourth lens element 140 is f4. The following relations are satisfied:f1=3.2736 mm, |f/f1|=1.0501, f4=−8.3381 mm and |f1/f4|=0.3926.

In the optical image capturing system of the first embodiment, focallengths of the second lens element 120 and the third lens element 130are f2 and f3, respectively. The following relations are satisfied:|f2|+|f3|=10.0976 min, |f1|+|f4|=11.6116 mm and |f2|+|f3|<|f1|+|f4|.

A ratio of the focal length f of the optical image capturing system to afocal length fp of each of lens elements with positive refractive poweris PPR. A ratio of the focal length f of the optical image capturingsystem to a focal length fn of each of lens elements with negativerefractive power is NPR. In the optical image capturing system of thefirst embodiment, a sum of the PPR of all lens elements with positiverefractive power is ΣPPR=|f/f1|+|f/f2|=1.95585. A sum of the NPR of alllens elements with negative refractive powers isΣNPR=|f/f3|+|f/f4|=0.95770 and ΣPPR/|ΣNPR|=2.04224. The followingrelations are also satisfied: |f/f1|=1.05009, |f/f2|=0.90576,|f/f3|=0.54543 and |f/f4|=0.41227.

In the optical image capturing system of the first embodiment, adistance from the object-side surface 112 of the first lens element tothe image-side surface 144 of the fourth lens element is InTL. Adistance from the object-side surface 112 of the first lens element tothe image plane 180 is HOS. A distance from an aperture 100 to an imageplane 180 is InS. Half of a diagonal length of an effective detectionfield of the image sensing device 190 is HOI. A distance from theimage-side surface 144 of the fourth lens element to an image plane 180is InB. The following relations are satisfied: InTL+InB=HOS, HOS=4.4250mm, HOI=2.9340 mm, HOS/HOI=1.5082, HOS/f=1.2873, InTL/HOS=0.7191,InS=4.2128 mm and InS/HOS=0.95204.

In the optical image capturing system of the first embodiment, the sumof central thicknesses of all lens elements with refractive power on theoptical axis is ΣTP. The following relations are satisfied: ΣTP=2.4437mm and ΣTP/InTL=0.76793. Hereby, contrast ratio for the image formationin the optical image capturing system and defect-free rate formanufacturing the lens element can be given considerationsimultaneously, and a proper back focal length is provided to disposeother optical components in the optical image capturing system.

In the optical image capturing system of the first embodiment, acurvature radius of the object-side surface 112 of the first lenselement is R1. A curvature radius of the image-side surface 114 of thefirst lens element is R2. The following relation is satisfied:|R1/R2|=0.1853. Hereby, the first lens element may have proper strengthof the positive refractive power, so as to avoid the longitudinalspherical aberration to increase too fast.

In the optical image capturing system of the first embodiment, acurvature radius of the object-side surface 142 of the fourth lenselement is R7. A curvature radius of the image-side surface 144 of thefourth lens element is R8. The following relation is satisfied:(R7-R8)/(R7+R8)=0.2756. Hereby, the astigmatism generated by the opticalimage capturing system can be corrected beneficially.

In the optical image capturing system of the first embodiment, the focallengths of the first lens element 110 and the second lens element 120are f1 and f2, respectively. A sum of focal lengths of all lens elementswith positive refractive power is ΣPP. The following relations aresatisfied: ΣPP=f1+f2=7.0688 mm and f1/(f1+f2)=0.4631. Hereby, it isfavorable for allocating the positive refractive power of the first lenselement 110 to other positive lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the first embodiment, the focallengths of the third lens element 130 and the fourth lens element 140are f3 and f4, respectively. A sum of focal lengths of all lens elementswith negative refractive power is ΣNP. The following relations aresatisfied: ΣNP=f3+f4=−14.6405 mm and f4/(f3+f4)=0.5695. Hereby, it isfavorable for allocating the negative refractive power of the fourthlens element 140 to other negative lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the first embodiment, adistance between the first lens element 110 and the second lens element120 on the optical axis is IN12. The following relations are satisfied:IN12=0.3817 mm and IN12/f=0.11105. Hereby, the chromatic aberration ofthe lens elements can be improved, such that the performance can beincreased.

In the optical image capturing system of the first embodiment, adistance between the second lens element 120 and the third lens element130 on the optical axis is IN23. The following relations are satisfied:IN23=0.0704 mm and IN23/f=0.02048. Hereby, the chromatic aberration ofthe lens elements can be improved, such that the performance can beincreased.

In the optical image capturing system of the first embodiment, adistance between the third lens element 130 and the fourth lens element140 on the optical axis is IN34. The following relations are satisfied:IN34=0.2863 mm and IN34/f=0.08330. Hereby, the chromatic aberration ofthe lens elements can be improved, such that the performance can beincreased.

In the optical image capturing system of the first embodiment, centralthicknesses of the first lens element 110 and the second lens element120 on the optical axis are TP1 and TP2, respectively. The followingrelations are satisfied: TP1=0.46442 mm, TP2=0.39686 mm, TP1/TP2=1.17023and (TP1+IN12)/TP2=2.13213. Hereby, the sensitivity produced by theoptical image capturing system can be controlled, and the performancecan be increased.

In the optical image capturing system of the first embodiment, centralthicknesses of the third lens element 130 and the fourth lens element140 on the optical axis are TP3 and TP4, respectively, and a distancebetween the aforementioned two lens elements on the optical axis isIN34. The following relations are satisfied: TP3=0.70989 mm, TP4=0.87253mm, TP3/TP4=0.81359 and (TP4+IN34)/TP3=1.63248. Hereby, the sensitivityproduced by the optical image capturing system can be controlled and thetotal height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, thefollowing relations are satisfied: IN23/(TP2+IN23+TP3)=0.05980. Hereby,the aberration generated by the process of moving the incident light canbe adjusted slightly layer upon layer, and the total height of theoptical image capturing system can be reduced.

A distance in parallel with an optical axis from a maximum effectivediameter position to an axial point on the object-side surface 142 ofthe fourth lens element is InRS41. A distance in parallel with anoptical axis from a maximum effective diameter position to an axialpoint on the image-side surface 144 of the fourth lens element isInRS42. A central thickness of the fourth lens element 140 on theoptical axis is TP4. The following relations are satisfied:InRS41=−0.23761 mm, InRS42=−0.20206 mm, |InRS41|+|InRS42|=0.43967 mm,|InRS41|/TP4=0.27232 and |InRS42|/TP4=0.23158. Hereby, it is favorableto the manufacturing and formation of the lens elements and to maintainits miniaturization effectively.

In the optical image capturing system of the first embodiment, adistance perpendicular to the optical axis between a critical point C41on the object-side surface 142 of the fourth lens element and theoptical axis is HVT41. A distance perpendicular to the optical axisbetween a critical point C42 on the image-side surface 144 of the fourthlens element and the optical axis is HVT42. The following relations aresatisfied: HVT41=0.5695 mm, HVT42=1.3556 mm and HVT41/HVT42=0.4201.Hereby, the aberration in the off-axis field of view can be corrected.

In the optical image capturing system of the first embodiment, thefollowing relation is satisfied: HVT42/HOI=0.4620. Hereby, theaberration of surrounding field of view can be corrected.

In the optical image capturing system of the first embodiment, thefollowing relation is satisfied: HVT42/HOS=0.3063. Hereby, theaberration of surrounding field of view can be corrected.

In the optical image capturing system of the first embodiment, an Abbenumber of the first lens element is NA1. An Abbe number of the secondlens element is NA2. An Abbe number of the third lens element is NA3. AnAbbe number of the fourth lens element is NA4. The following relationsare satisfied: |NA1−NA2|=0 and NA3/NA2=0.39921. Hereby, the chromaticaberration of the optical image capturing system can be corrected.

In the optical image capturing system of the first embodiment, TVdistortion and optical distortion for image formation in the opticalimage capturing system are TDT and ODT, respectively. The followingrelations are satisfied: |TDT|=0.4% and |ODT|=2.5%.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.525, MTFH3 is about 0.375 andMTFH7 is about 0.35.

Please refer to the following Table 1 and Table 2.

The detailed data of the optical image capturing system of the firstembodiment is as shown in Table 1.

TABLE 1 Data of the optical image capturing system f = 3.4375 mm, f/HEP= 2.23, HAF = 39.6900 deg; tan(HAF) = 0.8299 Surface # Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano At infinity1 Lens 1/Ape. stop  1.466388 0.464000 Plastic 1.535 56.07 3.274 2 7.914480 0.382000 3 Lens 2 −5.940659 0.397000 Plastic 1.535 56.07 3.7954 −1.551401 0.070000 5 Lens 3 −0.994576 0.710000 Plastic 1.642 22.46−6.302 6 −1.683933 0.286000 7 Lens 4  2.406736 0.873000 Plastic 1.53556.07 −8.338 8  1.366640 0.213000 9 IR-bandstop filter Plano 0.210000BK7_SCHOTT 1.517 64.13 10 Plano 0.820000 11 Image plane Plano Referencewavelength = 555 nm, shield position: clear aperture (CA) of the eighthplano = 2.320 mm.

As for the parameters of the aspheric surfaces of the first embodiment,reference is made to Table 2.

TABLE 2 Aspheric Coefficients Surface # 1 2 3 4 5 6 k = −1.595426E+00−7.056632E+00 −2.820679E+01 −1.885740E+00 1.013988E−01 −3.460337E+01 A4= −4.325520E−04 −2.633963E−02 −1.367865E−01 −9.745260E−02 2.504976E−01−9.580611E−01 A6 =  1.103749E+00  2.088207E−02  3.135755E−01−1.032177E+00 −1.640463E+00   3.303418E+00 A8 = −8.796867E+00−1.122861E−01 −6.149514E+00  8.016230E+00 1.354700E+01 −8.544412E+00 A10=  3.981982E+01 −7.137813E−01  3.883332E+01 −4.215882E+01 −6.223343E+01  1.602487E+01 A12 = −1.102573E+02  2.236312E+00 −1.463622E+02 1.282874E+02 1.757259E+02 −2.036011E+01 A14 =  1.900642E+02−2.756305E+00  3.339863E+02 −2.229568E+02 −2.959459E+02   1.703516E+01A16 = −2.000279E+02  1.557080E+00 −4.566510E+02  2.185571E+022.891641E+02 −8.966359E+00 A18 =  1.179848E+02 −2.060190E+00 3.436469E+02 −1.124538E+02 −1.509364E+02   2.684766E+00 A20 =−3.023405E+01  2.029630E+00 −1.084572E+02  2.357571E+01 3.243879E+01−3.481557E−01 Surface # 7 8 k = −4.860907E+01 −7.091499E+00 A4 =−2.043197E−01 −8.148585E−02 A6 =  6.516636E−02  3.050566E−02 A8 = 4.863926E−02 −8.218175E−03 A10 = −7.086809E−02  1.186528E−03 A12 = 3.815824E−02 −1.305021E−04 A14 = −1.032930E−02  2.886943E−05 A16 = 1.413303E−03 −6.459004E−06 A18 = −8.701682E−05  6.571792E−07 A20 = 1.566415E−06 −2.325503E−08

Table 1 is the detailed structure data to the first embodiment in FIG.1A, wherein the unit of the curvature radius, the thickness, thedistance, and the focal length is millimeters (mm). Surfaces 0-14illustrate the surfaces from the object side to the image plane in theoptical image capturing system. Table 2 is the aspheric coefficients ofthe first embodiment, wherein k is the conic coefficient in the asphericsurface formula, and A1-A20 are the first to the twentieth orderaspheric surface coefficient. Besides, the tables in the followingembodiments are referenced to the schematic view and the aberrationgraphs, respectively, and definitions of parameters in the tables areequal to those in the Table 1 and the Table 2, so the repetitiousdetails will not be given here.

The Second Embodiment (Embodiment 2)

Please refer to FIG. 2A, FIG. 2B, and FIG. 2C, FIG. 2A is a schematicview of the optical image capturing system according to the secondembodiment of the present application, FIG. 2B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the second embodiment of the present application, andFIG. 2C is a characteristic diagram of modulation transfer according tothe second embodiment of the present application. As shown in FIG. 2A,in order from an object side to an image side, the optical imagecapturing system includes an aperture stop 200, a first lens element210, a second lens element 220, a third lens element 230, a fourth lenselement 240, an IR-bandstop filter 270, an image plane 280, and an imagesensing device 290.

The first lens element 210 has positive refractive power and it is madeof plastic material. The first lens element 210 has a convex object-sidesurface 212 and a concave image-side surface 214, both of theobject-side surface 212 and the image-side surface 214 are aspheric, andthe object-side surface 212 and the image-side surface 214 have aninflection point respectively.

The second lens element 220 has negative refractive power and it is madeof plastic material. The second lens element 220 has a convexobject-side surface 222 and a concave image-side surface 224, and bothof the object-side surface 222 and the image-side surface 224 areaspheric. The object-side surface 222 and the image-side surface 224have two inflection points respectively.

The third lens element 230 has positive refractive power and it is madeof plastic material. The third lens element 230 has a concaveobject-side surface 232 and a convex image-side surface 234, and both ofthe object-side surface 232 and the image-side surface 234 are aspheric.The object-side surface 232 has three inflection points and theimage-side surface 234 has an inflection point.

The fourth lens element 240 has negative refractive power and it is madeof plastic material. The fourth lens element 240 has a convexobject-side surface 242 and a concave image-side surface 244, both ofthe object-side surface 242 and the image-side surface 244 are aspheric,and the object-side surface 242 and the image-side surface 244 have aninflection point respectively.

The IR-bandstop filter 270 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 240 and the image plane 280.

In the optical image capturing system of the second embodiment, focallengths of the second lens element 220, the third lens element 230 andthe fourth lens element 240 are f2, f3 and f4, respectively. Thefollowing relations are satisfied: |f2|+|f3|=10.4819 mm,|f1|+|f4|=5.9213 mm and |f2|+|f3|>|f1|+|f4|.

In the optical image capturing system of the second embodiment, thefirst lens element 210 and the third lens element 230 are positive lenselements, and focal lengths of the first lens element 210 and the thirdlens element 230 are f1 and f3, respectively. A sum of focal lengths ofall lens elements with positive refractive power is ΣPP. The followingrelations is satisfied: ΣPP=f1+f3. Hereby, it is favorable forallocating the positive refractive power of the first lens element 210to other positive lens elements and the significant aberrationsgenerated in the process of moving the incident light can be suppressed.

In the optical image capturing system of the second embodiment, focallengths of the second lens element 220 and the fourth lens element 240are f2 and f4, respectively. A sum of focal lengths of all lens elementswith negative refractive power is ΣNP. The following relation issatisfied: ΣNP=f2+f4. Hereby, it is favorable for allocating thenegative refractive power of the fourth lens element 240 to othernegative lens elements.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.675, MTFH3 is about 0.575 andMTFH7 is about 0.45.

Please refer to the following Table 3 and Table 4.

The detailed data of the optical image capturing system of the secondembodiment is as shown in Table 3.

TABLE 3 Data of the optical image capturing system f = 2.7262 mm; f/HEP= 1.8; HAF = 40.0 deg; tan(HAF) = 0.8391 Surface # Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano At infinity1 Ape. stop Plano −0.050 2 Lens 1 1.865870486 0.543 Plastic 1.544 56.093.500 3 71.71310883 0.253 4 Lens 2 16.63354937 0.434 Plastic 1.642 22.46−8.688 5 4.161274933 0.244 6 Lens 3 −1.653130086 0.623 Plastic 1.54456.09 1.794 7 −0.696831801 0.025 8 Lens 4 1.39812464 0.418 Plastic 1.54456.09 −2.421 9 0.607743242 0.363 10 IR-bandstop filter Plano 0.200BK7_SCHOTT 1.517 64.13 11 Plano 0.8 12 Image plane Plano Referencewavelength = 555 nm, shield position: clear aperture (CA) of the thirdplano = 0.840 mm.

As for the parameters of the aspheric surfaces of the second embodiment,reference is made to Table 4.

TABLE 4 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = −5.458268E−011.105355E+01 4.886188E−01 1.130950E+01 −6.860229E+00 −1.638368E+00 A4 =−4.868153E−02 −1.979421E−01  −2.768294E−01  −2.649241E−02   2.958671E−01 2.659633E−01 A6 =  3.068901E−03 −1.038800E−01  −8.357252E−02 −1.160021E−01  −1.062290E+00 −1.738986E−01 A8 = −1.213027E−01−1.321495E−01  −8.522807E−01  −2.063213E−01   4.197203E+00 −2.048833E+00A10 = −3.630126E−01 4.101796E−01 2.676335E+00 7.060168E−01 −1.068009E+01 8.354253E+00 A12 =  9.818630E−01 −4.136062E−01  −2.376063E+00 −7.186293E−01   1.568705E+01 −1.605060E+01 A14 = −9.821233E−017.958107E−02 7.367818E−01 2.639884E−01 −1.250197E+01  1.793108E+01 A16 = 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  4.198524E+00−1.174961E+01 A18 =  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 3.704785E−01  4.180885E+00 A20 =  0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 −4.192175E−01 −6.217950E−01 Surface # 8 9 k =−2.576237E+01 −4.842296E+00 A4 =  2.563009E−01 −1.116697E−01 A6 =−1.145274E+00  1.563365E−02 A8 =  2.300333E+00  6.216256E−02 A10 =−3.044869E+00 −1.038014E−01 A12 =  2.686434E+00  8.169181E−02 A14 =−1.558627E+00 −3.738868E−02 A16 =  5.715765E−01  1.008997E−02 A18 =−1.204374E−01 −1.490220E−03 A20 =  1.113151E−02  9.257515E−05

In the second embodiment, the presentation of the aspheric surfaceformula is similar to that in the first embodiment. Besides, thedefinitions of parameters in following tables are equal to those in thefirst embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 3 and Table 4.

Second embodiment (Primary reference wavelength = 555 nm) ETP1 ETP2 ETP3ETP4 ED12/ED23 SED 0.339  0.567  0.401  0.542  2.555 0.797  ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ED23/ED34 SETP 0.626  1.309  0.644  1.297 0.219 1.850  ETL EBL EIN EIR PIR STP 3.782  1.135  2.647  0.135  0.3632.017  EIN/ETL SETP/EIN EIR/PIR EBL/BL BL SETP/STP 0.700  0.699  0.371 0.8327  1.363 0.917  ED12 ED23 ED34 ED12/IN12 ED23/IN23 ED34/IN34 0.251 0.098  0.449  0.990  0.401 17.941   InRS41 InRS42 HVT41 HVT42 | ODT | %| TDT | % −0.06652  0.00296 0.91004 1.21566  1.02579 0.96598 | f/f1 | |f/f2 | | f/f3 | | f/f4 | | f1/f2 | | f2/f3 | 0.77895 0.31379 1.519581.12587  0.40284 4.84261 ΣPPR ΣNPR ΣPPR/| ΣNPR | ΣPP ΣNP f1/ΣPP 2.298521.43966 1.59657 5.29391 −11.10931 0.66111 f4/ΣNP IN12/f IN23/f IN34/fTP3/f TP4/f 0.21796 0.09287 0.08963 0.00917  0.22851 0.15326 InTL HOSHOS/HOI InS/HOS InTL/HOS ΣTP/InTL 2.53951 3.90221 1.69661 0.98719 0.65079 0.79424 (TP1 + IN12)/TP2 (TP4 + IN34)/TP3 TP1/TP2 TP3/TP4IN23/(TP2 + IN23 + TP3) 1.83466 0.71082 1.25090 1.49101  0.18782 |InRS41 |/TP4 | InRS42 |/TP4 HVT42/HOI HVT42/HOS 0.15920 0.00708 0.528548  0.311531

The following contents may be deduced from Table 3 and Table 4.

Related inflection point values of second embodiment (Primary referencewavelength: 555 nm) HIF111 0.58199 HIF111/HOI 0.25304 SGI111 0.084091 |SGI111 |/(| SGI111 | + TP1) 0.13420 HIF121 0.07635 HIF121/HOI 0.03319SGI121 0.000034 | SGI121 |/(| SGI121 | + TP1) 0.00006 HIF211 0.13337HIF211/HOI 0.05799 SGI211 0.000447 | SGI211 |/(| SGI211 | + TP2) 0.00103HIF212 0.77863 HIF212/HOI 0.33853 SGI212 −0.09388 | SGI212 |/(| SGI212| + TP2) 0.17794 HIF221 0.50851 HIF221/HOI 0.22109 SGI221 0.02857 |SGI221 |/(| SGI221 | + TP2) 0.06180 HIF222 0.89582 HIF222/HOI 0.38949SGI222 0.05354 | SGI222 |/(| SGI222 | + TP2) 0.10989 HIF311 0.47963HIF311/HOI 0.20853 SGI311 −0.05310 | SGI311 |/(| SGI311 | + TP3) 0.07854HIF312 0.81556 HIF312/HOI 0.35459 SGI312 −0.10642 | SGI312 |/(| SGI312| + TP3) 0.14590 HIF313 0.90766 HIF313/HOI 0.39463 SGI313 −0.12028 |SGI313 |/(| SGI313 | + TP3) 0.16183 HIF321 0.81567 HIF321/HOI 0.35464SGI321 −0.36112 | SGI321 |/(| SGI321 | + TP3) 0.36696 HIF411 0.46613HIF411/HOI 0.20266 SGI411 0.057165 | SGI411 |/(| SGI411 | + TP4) 0.12035HIF421 0.48060 HIF421/HOI 0.20896 SGI421 0.127958 | SGI421 |/(| SGI421| + TP4) 0.23445

The Third Embodiment (Embodiment 3)

Please refer to FIG. 3A, FIG. 3B, and FIG. 3C, FIG. 3A is a schematicview of the optical image capturing system according to the thirdembodiment of the present application, FIG. 3B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the third embodiment of the present application, andFIG. 3C is a characteristic diagram of modulation transfer according tothe third embodiment of the present application. As shown in FIG. 3A, inorder from an object side to an image side, the optical image capturingsystem includes an aperture stop 300, a first lens element 310, a secondlens element 320, a third lens element 330, a fourth lens element 340,an IR-bandstop filter 370, an image plane 380, and an image sensingdevice 390.

The first lens element 310 has positive refractive power and it is madeof plastic material. The first lens element 310 has a convex object-sidesurface 312 and a concave image-side surface 314, and both of theobject-side surface 312 and the image-side surface 314 are aspheric. Theobject-side surface 312 and the image-side surface 314 have aninflection point respectively.

The second lens element 320 has negative refractive power and it is madeof plastic material. The second lens element 320 has a convexobject-side surface 322 and a concave image-side surface 324, and bothof the object-side surface 322 and the image-side surface 324 areaspheric. The object-side surface 322 has two inflection points.

The third lens element 330 has positive refractive power and it is madeof plastic material. The third lens element 330 has a concaveobject-side surface 332 and a convex image-side surface 334, and both ofthe object-side surface 332 and the image-side surface 334 are aspheric.The image-side surface 334 has two inflection points.

The fourth lens element 340 has negative refractive power and it is madeof plastic material. The fourth lens element 340 has a convexobject-side surface 342 and a concave image-side surface 344, and bothof the object-side surface 342 and the image-side surface 344 areaspheric. The object-side surface 342 has three inflection points andthe image-side surface 344 has an inflection point.

The IR-bandstop filter 370 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 340 and the image plane 380.

In the optical image capturing system of the third embodiment, focallengths of the second lens element 320, the third lens element 330 andthe fourth lens element 340 are f2, f3 and f4, respectively. Thefollowing relations are satisfied: |f2|+|f3|=10.0909 mm,|f1|+|f4|=4.7905 mm and |f2|+|f3|>|f1|+|f4|.

In the optical image capturing system of the third embodiment, a sum offocal lengths of all lens elements with positive refractive power isΣPP. The following relation is satisfied: ΣPP=f1+f3. Hereby, it isfavorable for allocating the positive refractive power of the first lenselement 310 to other positive lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the third embodiment, a sum offocal lengths of all lens elements with negative refractive power isΣNP. The following relation is satisfied: ΣNP=f2+f4. Hereby, it isfavorable for allocating the negative refractive power of the fourthlens element 340 to other negative lens elements.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.5, MTFH3 is about 0.48 andMTFH7 is about 0.275.

Please refer to the following Table 5 and Table 6.

The detailed data of the optical image capturing system of the thirdembodiment is as shown in Table 5.

TABLE 5 Data of the optical image capturing system f = 2.6979 mm; f/HEP= 2.0; HAF = 40.0 deg; tan(HAF) = 0.8391 Surface# Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano At infinity1 Ape. Stop Plano −0.115 2 Lens 1 1.17878973 0.449 Plastic 1.544 56.092.796 3 4.480000214 0.173 4 Lens 2 10.99545691 0.254 Plastic 1.642 22.46−8.284 5 3.572860518 0.350 6 Lens 3 −1.664676284 0.452 Plastic 1.54456.09 1.807 7 −0.678804213 0.025 8 Lens 4 2.330045417 0.400 Plastic1.535 56.07 −1.994 9 0.689181921 0.232 10 IR-bandstop filter Plano 0.200BK7_SCHOTT 1.517 64.13 11 Plano 0.050 12 Image plane Plano 0.750Reference wavelength = 555 nm, shield position: clear aperture (CA) ofthe third plano = 0.72 mm, clear aperture (CA) of the seventh plano =1.050 mm.

As for the parameters of the aspheric surfaces of the third embodiment,reference is made to Table 6.

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = −4.834658E−01 9.932609E−02 5.930760E+00 1.580382E+01 −1.354150E+00 −2.035302E+00 A4 =−4.651682E−02  −1.490099E−01  −2.731284E−01  −1.094050E−01  3.589493E−01  2.095295E−01 A6 = 4.456504E−01 −7.637322E−01 −9.392232E−01  −1.934310E−01  −1.319510E+00 −1.852375E−01 A8 =−1.918150E+00  1.679880E+00 1.897283E+00 −3.203390E−01   4.437100E+00−1.975912E+00 A10 = 2.652993E+00 −4.416796E+00  −1.661839E+00 3.624211E+00 −1.105607E+01  9.578125E+00 A12 = 7.925016E−02 6.264773E+004.258696E+00 −6.179614E+00   1.601432E+01 −2.182646E+01 A14 =−4.466054E+00  −3.883586E+00  −3.453505E+00  4.632617E+00 −1.069253E+01 3.228150E+01 A16 = 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 1.122810E+00 −3.035044E+01 A18 = 0.000000E+00 0.000000E+00 0.000000E+000.000000E+00  3.704785E−01  1.579177E+01 A20 = 0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 −4.192175E−01 −3.402908E+00 Surface # 8 9 k =−7.728873E+01 −6.276138E+00 A4 = −1.653803E−01 −3.061765E−01 A6 =−1.494528E−01  3.699461E−01 A8 =  4.367593E−01 −3.965316E−01 A10 =−3.047720E−01  3.045762E−01 A12 =  4.856976E−02 −1.553925E−01 A14 = 4.651314E−02  4.957519E−02 A16 = −2.893971E−02 −9.123750E−03 A18 = 6.560395E−03  8.340828E−04 A20 = −5.490825E−04 −2.599922E−05

The presentation of the aspheric surface formula in the third embodimentis similar to that in the first embodiment. Besides, the definitions ofparameters in following tables are equal to those in the firstembodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 5 and Table 6.

Third embodiment (Primary reference wavelength: 555nm) ETP1 ETP2 ETP3ETP4 ED12/ED23 SED 0.237  0.363  0.305  0.532  0.803  0.629  ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ED23/ED34 SETP 0.528  1.430  0.675  1.331 0.614  1.438  ETL EBL EIN EIR PIR STP 3.149  1.082  2.067  0.082  0.232 1.555  EIN/ETL SETP/EIN EIR/PIR EBL/BL BL SETP/STP 0.656  0.696  0.353 0.8785  1.2317  0.924  ED12 ED23 ED34 ED12/IN12 ED23/IN23 ED34/IN340.147  0.183  0.298  0.852  0.523  11.936   InRS41 InRS42 HVT41 HVT42 |ODT | % | TDT | % −0.03649  −0.09788  0.52579 0.97814 1.63657 0.56472 |f/f1 | | f/f2 | | f/f3 | | f/f4 | | f1/f2 | | f2/f3 | 0.96486 0.325681.49285 1.35272 0.33755 4.58374 ΣPPR ΣNPR ΣPPR/| ΣNPR | ΣPP ΣNP f1/ΣPP2.45770 1.67841 1.46431 4.60334 −10.27814  0.60742 f4/ΣNP IN12/f IN23/fIN34/f TP3/f TP4/f 0.19404 0.06405 0.12980 0.00927 0.16751 0.14827 InTLHOS HOS/HOI InS/HOS InTL/HOS ΣTP/InTL 2.10332 3.33500 1.45000 0.965430.63068 0.73947 (TP1 + IN12)/TP2 (TP4 + IN34)/TP3 TP1/TP2 TP3/TP4IN23/(TP2 + IN23 + TP3) 2.44985 0.94041 1.76952 1.12983 0.33159 | InRS41|/TP4 | InRS42 |/TP4 HVT42/HOI HVT42/HOS 0.09121 0.24469 0.42528 0.29330

The following contents may be deduced from Table 5 and Table 6.

Related inflection point values of third embodiment (Primary referencewavelength: 555 nm) HIF111 0.71014 HIF111/HOI 0.30876 SGI111 0.16738 |SGI111 |/(| SGI111 | + TP1) 0.27137 HIF211 0.21510 HIF211/HOI 0.09352SGI211 −0.00166 | SGI211 |/(| SGI211 | + TP2) 0.00648 HIF212 0.44056HIF212/HOI 0.19155 SGI212 −0.00364 | SGI212 |/(| SGI212 | + TP2) 0.01415HIF213 0.68636 HIF213/HOI 0.29842 SGI213 −0.00722 | SGI213 |/(| SGI213| + TP2) 0.02763 HIF214 0.73931 HIF214/HOI 0.32144 SGI214 −0.20360 |SGI214 |/(| SGI214 | + TP2) 0.44495 HIF321 1.05322 HIF321/HOI 0.45792SGI321 −0.55008 | SGI321 |/(| SGI321 | + TP3) 0.54897 HIF322 1.34668HIF322/HOI 0.58551 SGI322 −0.77488 | SGI322 |/(| SGI322 | + TP3) 0.63162HIF411 0.18973 HIF411/HOI 0.08249 SGI411 0.00225 | SGI411 |/(| SGI411| + TP4) 0.00559 HIF412 1.30354 HIF412/HOI 0.56676 SGI412 −0.15022 |SGI412 |/(| SGI412 | + TP4) 0.27301 HIF421 0.50984 HIF421/HOI 0.22167SGI421 0.11443 | SGI421 |/(| SGI421 | + TP4) 0.22245

The Fourth Embodiment (Embodiment 4)

Please refer to FIG. 4A, FIG. 4B, and FIG. 4C, FIG. 4A is a schematicview of the optical image capturing system according to the fourthembodiment of the present application, FIG. 4B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the fourth embodiment of the present application, andFIG. 4C is a characteristic diagram of modulation transfer according tothe fourth embodiment of the present application. As shown in FIG. 4A,in order from an object side to an image side, the optical imagecapturing system includes first lens element 410, an aperture stop 400,a second lens element 420, a third lens element 430, a fourth lenselement 440, an IR-bandstop filter 470, an image plane 480, and an imagesensing device 490.

The first lens element 410 has positive refractive power and it is madeof plastic material. The first lens element 410 has a convex object-sidesurface 412 and a concave image-side surface 414, and both of theobject-side surface 412 and the image-side surface 414 are aspheric, andthe object-side surface 412 and the image-side surface 414 have aninflection point respectively.

The second lens element 420 has negative refractive power and it is madeof plastic material. The second lens element 420 has a convexobject-side surface 422 and a concave image-side surface 424, and bothof the object-side surface 422 and the image-side surface 424 areaspheric. The object-side surface 422 has two inflection points.

The third lens element 430 has positive refractive power and it is madeof plastic material. The third lens element 430 has a concaveobject-side surface 432 and a convex image-side surface 434, and both ofthe object-side surface 432 and the image-side surface 434 are aspheric.The image-side surface 434 has an inflection point.

The fourth lens element 440 has negative refractive power and it is madeof plastic material. The fourth lens element 440 has a concaveobject-side surface 442 and a concave image-side surface 444, and bothof the object-side surface 442 and the image-side surface 444 areaspheric, and the object-side surface 442 has an inflection point andthe image-side surface 444 has two inflection points.

The IR-bandstop filter 470 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 440 and the image plane 480.

In the optical image capturing system of the fourth embodiment, focallengths of the second lens element 420, the third lens element 430 andthe fourth lens element 440 are f2, f3 and f4, respectively. Thefollowing relations are satisfied: |f2|+|f3|=14.9679 mm,|f1|+|f4|=3.8785 mm and |f2|+|f3|>|f1|+|f4|.

In the optical image capturing system of the fourth embodiment, a sum offocal lengths of all lens elements with positive refractive power isΣPP. The following relation is satisfied: ΣPP=f1+f3. Hereby, it isfavorable for allocating the positive refractive power of the first lenselement 410 to other positive lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the fourth embodiment, a sum offocal lengths of all lens elements with negative refractive power isΣNP. The following relation is satisfied: ΣNP=f2+f4. Hereby, it isfavorable for allocating the negative refractive power of the fourthlens element 440 to other negative lens elements.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.55, MTFH3 is about 0.42 andMTFH7 is about 0.325.

Please refer to the following Table 7 and Table 8.

The detailed data of the optical image capturing system of the fourthembodiment is as shown in Table 7.

TABLE 7 Data of the optical image capturing system f = 2.5783 mm; f/HEP= 2.062; HAF = 40.7728 deg; tan(HAF) = 0.8623 Surface# Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano 500 mm 1Ape. Stop/Lens 1 1.301639705 0.578 Plastic 1.543 56.00 2.789 27.652916779 0.000 3 Shading sheet Plano 0.024 4 Lens 2 5.367882916 0.222Plastic 1.641 22.47 −13.754 5 3.292127257 0.481 6 Lens 3 −3.1081082270.637 Plastic 1.543 55.97 1.214 7 −0.584655208 0.077 8 Lens 4−5.018398237 0.369 Plastic 1.543 55.97 −1.089 9 0.690315393 0.492 10IR-band stop filter Plano 0.210 BK7_SCHOTT 1.517 64.13 11 Plano 0.255 12Image plane Plano 0.000 Reference wavelength = 555 nm, shield position:clear aperture (CA) of the third plano = 0.676 mm.

As for the parameters of the aspheric surfaces of the fourth embodiment,reference is made to Table 8.

TABLE 8 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = 3.452791E−01−2.840802E+02 −9.886525E+02 6.992196E+00  1.078120E+01 −3.835327E+00 A4= −3.147900E−02  −6.606012E−01 −1.623250E−02 1.041235E−01 −5.718340E−02−3.383806E−01 A6 = −3.785704E−01   1.029236E+00 −2.448858E+001.931052E−01  2.164852E−01  4.522225E−01 A8 = 2.246311E+00 −2.224113E+00 1.534789E+01 −6.141772E−01  −2.679533E+00 −5.801568E−01 A10 =−9.385525E+00   4.396370E+00 −5.613097E+01 6.210259E−01  2.427931E+01 1.184262E+00 A12 = 1.829217E+01 −6.153170E−01  1.346178E+021.348543E+00 −1.133607E+02 −3.172129E+00 A14 = −1.625967E+01 −8.888651E+00 −1.623708E+02 1.460291E+00  2.905072E+02  5.236404E+00 A16= 3.212279E+00  5.297751E+00  3.178763E+01 −4.908302E+00  −4.183891E+02−4.448439E+00 A18 = 0.000000E+00  0.000000E+00  8.329325E+010.000000E+00  3.188824E+02  1.869089E+00 A20 = 0.000000E+00 0.000000E+00 −3.210594E+01 0.000000E+00 −1.002448E+02 −3.160493E−01Surface # 7 8 k =  2.939454E+00 −6.869443E+00 A4 = −5.883561E−02−1.755419E−01 A6 = −1.641543E−01  1.371828E−01 A8 =  2.469354E−01−9.510047E−02 A10 = −1.202236E−01  4.621236E−02 A12 =  2.536431E−02−1.456673E−02 A14 = −1.736329E−03  2.562736E−03 A16 = −6.467779E−05−1.850028E−04 A18 =  0.000000E+00  0.000000E+00 A20 =  0.000000E+00 0.000000E+00

The presentation of the aspheric surface formula in the fourthembodiment is similar to that in the first embodiment. Besides thedefinitions of parameters in following tables are equal to those in thefirst embodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 7 and Table 8.

Fourth embodiment (Primary reference wavelength: 555 nm) ETP1 ETP2 ETP3ETP4 ED12/ED23 SED 0.385  0.311  0.462  0.569  0.215  0.659 ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ED23/ED34 SETP 0.666  1.403  0.725  1.542 1.138  1.726 ETL EBL EIN EIR PIR STP 3.196  0.811  2.386  0.346  0.492 1.805 EIN/ETL SETP/EIN EIR/PIR EBL/BL BL SETP/STP 0.746  0.724  0.703 0.8476  0.9568  0.956 ED12 ED23 ED34 ED12/IN12 ED23/IN23 ED34/IN340.068  0.315  0.277  2.784  0.655  3.574 InRS41 InRS42 HVT41 HVT42 | ODT| % | TDT | % −0.27907  −0.02391  1.46132 1.11452 2.50201  0.53086 |f/f1 | | f/f2 | | f/f3 | | f/f4 | | f1/f2 | | f2/f3 | 0.92432 0.187462.12427 2.36742 0.20280  11.33208 ΣPPR ΣNPR ΣPPR/| ΣNPR | ΣPP ΣNP f1/ΣPP3.04859 2.55488 1.19324 4.00314 −14.84328   0.69680 f4/ΣNP IN12/f IN23/fIN34/f TP3/f TP4/f 0.07337 0.00942 0.18656 0.03003 0.24709  0.14303 InTLHOS HOS/HOI InS/HOS InTL/HOS ΣTP/InTL 2.38805 3.34484 1.45428 0.955600.71395  0.75599 (TP1 + IN12)/TP2 (TP4 + IN34)/TP3 TP1/TP2 TP3/TP4IN23/(TP2 + IN23 + TP3) 2.71580 0.70038 2.60629 1.72752 0.35903 | InRS41|/TP4 | InRS42 |/TP4 HVT42/HOI HVT42/HOS 0.75673 0.06484 0.48457 0.33321

The following contents may be deduced from Table 7 and Table 8.

Related inflection point values of fourth embodiment (Primary referencewavelength: 555 nm) HIF111 0.61035 HIF111/HOI 0.26537 SGI111 0.141488 |SGI111 |/(| SGI111 | + TP1) 0.19671 HIF121 0.12521 HIF121/HOI 0.05444SGI121 0.00085 | SGI121 |/(| SGI121 | + TP1) 0.00146 HIF211 0.18102HIF211/HOI 0.07870 SGI211 0.002397 | SGI211 |/(| SGI211 | + TP2) 0.01069HIF212 0.49867 HIF212/HOI 0.21681 SGI212 0.001014 | SGI212 |/(| SGI212| + TP2) 0.00455 HIF321 0.82763 HIF321/HOI 0.35984 SGI321 −0.40727 |SGI321 |/(| SGI321 | + TP3) 0.38998 HIF411 0.96977 HIF411/HOI 0.42164SGI411 −0.16491 | SGI411 |/(| SGI411 | + TP4) 0.30899 HIF421 0.41415HIF421/HOI 0.18006 SGI421 0.085336 | SGI421 |/(| SGI421 | + TP4) 0.18792HIF422 1.78165 HIF422/HOI 0.77463 SGI422 −0.00284 | SGI422 |/(| SGI422| + TP4) 0.00764

The Fifth Embodiment (Embodiment 5)

Please refer to FIG. 5A, FIG. 5B, and FIG. 5C, FIG. 5A is a schematicview of the optical image capturing system according to the fifthsembodiment of the present application, FIG. 5B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the fifth embodiment of the present application, andFIG. 5C is a characteristic diagram of modulation transfer according tothe fifth embodiment of the present application. As shown in FIG. 5A, inorder from an object side to an image side, the optical image capturingsystem includes an aperture stop 500, a first lens element 510, a secondlens element 520, a third lens element 530, a fourth lens element 540,an IR-bandstop filter 570, an image plane 580, and an image sensingdevice 590.

The first lens element 510 has positive refractive power and it is madeof plastic material. The first lens element 510 has a convex object-sidesurface 512 and a convex image-side surface 514, both of the object-sidesurface 512 and the image-side surface 514 are aspheric, and theobject-side surface 512 has an inflection point.

The second lens element 520 has negative refractive power and it is madeof plastic material. The second lens element 520 has a concaveobject-side surface 522 and a concave image-side surface 524, and bothof the object-side surface 522 and the image-side surface 524 areaspheric. The object-side surface 522 has an inflection point.

The third lens element 530 has positive refractive power and it is madeof plastic material. The third lens element 530 has a concaveobject-side surface 532 and a convex image-side surface 534, and both ofthe object-side surface 532 and the image-side surface 534 are aspheric.The object-side surface 532 and the image-side surface 534 have twoinflection points respectively.

The fourth lens element 540 has negative refractive power and it is madeof plastic material. The fourth lens element 540 has a convexobject-side surface 542 and a concave image-side surface 544, and bothof the object-side surface 542 and the image-side surface 544 areaspheric. The object-side surface 542 has three inflection points andthe image-side surface 544 has an inflection point.

The IR-bandstop filter 570 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 540 and the image plane 580.

In the optical image capturing system of the fifth embodiment, focallengths of the second lens element 520, the third lens element 530 andthe fourth lens element 540 are f2, f3 and f4, respectively. Thefollowing relations are satisfied: |f2|+|f3|=6.4833 mm, |f1|+|f4|=4.7009mm and |f2|+|f3|>|f1|+|f4|.

In the optical image capturing system of the fifth embodiment, a sum offocal lengths of all lens elements with positive refractive power isΣPP. The following relation is satisfied: ΣPP=f1+f3. Hereby, it isfavorable for allocating the positive refractive power of the first lenselement 510 to other positive lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the fifth embodiment, a sum offocal lengths of all lens elements with negative refractive power isΣNP. The following relation is satisfied: ΣNP=f2+f4. Hereby, it isfavorable for allocating the negative refractive power of the fourthlens element 540 to other negative lens elements.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.62, MTFH3 is about 0.56 andMTFH7 is about 0.42.

Please refer to the following Table 9 and Table 10.

The detailed data of the optical image capturing system of the fifthembodiment is as shown in Table 9.

TABLE 9 Data of the optical image capturing system f = 2.7097 mm; f/HEP= 2.2; HAF = 40.0 deg; tan(HAF) = 0.8391 Surface# Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano At infinity1 Ape. Stop Plano −0.055 2 Lens 1 1.570226694 0.446 Plastic 1.544 56.092.744 3 −29.26501023 0.176 4 Lens 2 −13.36490248 0.459 Plastic 1.63623.89 −4.841 5 4.089913002 0.297 6 Lens 3 −1.915872103 0.500 Plastic1.544 56.09 1.642 7 −0.666893923 0.025 8 Lens 4 1.88904663 0.436 Plastic1.544 56.09 −1.957 9 0.626681624 0.287 10 IR-bandstop filter Plano 0.200BK_7 1.517 64.13 11 Plano 0.800 12 Image plane Plano Referencewavelength = 555 nm, shield position: clear aperture (CA) of the seventhplano = 1.050 mm.

As for the parameters of the aspheric surfaces of the fifth embodiment,reference is made to Table 10.

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = 1.370873E−01−2.811440E−01 −6.717562E−01 4.853977E+00 −4.387058E+00 −1.929010E+00 A4= −7.017318E−02  −3.317722E−01 −3.275127E−01 −4.854974E−02  2.576799E−01  2.483229E−02 A6 = −1.419323E−01  −1.075150E−01−5.832151E−01 −1.853777E−01  −7.027565E−01  1.459619E+00 A8 =−4.460536E−01  −1.129993E+00  1.696151E+00 2.849769E−01  1.407444E+00−1.104967E+01 A10 = 1.065359E+00  3.561075E+00 −2.553664E+002.089337E−01 −1.662989E+00  4.009100E+01 A12 = −2.981852E+00 −5.017304E+00  5.418850E+00 −7.101936E−01   1.828188E+00 −8.560863E+01A14 = 3.392999E−01  2.326448E+00 −4.045887E+00 4.956591E−01−1.778006E+00  1.147050E+02 A16 = 0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00  6.525280E−01 −9.356194E+01 A18 =0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00  3.704785E−01 4.201700E+01 A20 = 0.000000E+00  0.000000E+00  0.000000E+000.000000E+00 −4.192175E−01 −7.923677E+00 Surface # 8 9 k = −7.695789E+01−5.401177E+00 A4 =  9.226352E−02 −2.458615E−01 A6 = −1.103240E+00 2.464583E−01 A8 =  2.754382E+00 −2.162580E−01 A10 = −3.885477E+00 1.516062E−01 A12 =  3.453212E+00 −8.652785E−02 A14 = −1.946087E+00 3.730183E−02 A16 =  6.724747E−01 −1.075143E−02 A18 = −1.298477E−01 1.789162E−03 A20 =  1.071949E−02 −1.287755E−04

The presentation of the aspheric surface formula in the fifth embodimentis similar to that in the first embodiment. Besides the definitions ofparameters in following tables are equal to those in the firstembodiment so the repetitious details will not be given here.

The following contents may be deduced from Table 9 and Table 10.

Fifth embodiment (Primary reference wavelength: 555 nm) ETP1 ETP2 ETP3ETP4 ED12/ED23 SED 0.279  0.563  0.340  0.557  0.951  0.660  ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ED23/ED34 SETP 0.625  1.225  0.680  1.276 0.631  1.739  ETL EBL EIN EIR PIR STP 3.527  1.128  2.399  0.128  0.287 1.842  EIN/ETL SETP/EIN EIR/PIR EBL/BL BL SETP/STP 0.680  0.725  0.447 0.8767  1.2867  0.944  ED12 ED23 ED34 ED12/IN12 ED23/IN23 ED34/IN340.178  0.187  0.296  1.007  0.629  11.840   InRS41 InRS42 HVT41 HVT42 |ODT | % | TDT | % −0.03182  0.01957 0.63878 1.10604 1.15645 0.67875 |f/f1 | | f/f2 | | f/f3 | | f/f4 | | f1/f2 | | f2/f3 | 0.98747 0.559711.65018 1.38474 0.56682 2.94827 ΣPPR ΣNPR ΣPPR/| ΣNPR | ΣPP ΣNP f1/ΣPP2.63765 1.94445 1.35650 4.38615 −6.79806  0.62563 f4/ΣNP IN12/f IN23/fIN34/f TP3/f TP4/f 0.28785 0.06504 0.10945 0.00923 0.18441 0.16104 InTLHOS HOS/HOI InS/HOS InTL/HOS ΣTP/InTL 2.33966 3.62635 1.57667 0.984850.64518 0.78722 (TP1 + IN12)/TP2 (TP4 + IN34)/TP3 TP1/TP2 TP3/TP4IN23/(TP2 + IN23 + TP3) 1.35514 0.92333 0.97153 1.14508 0.23619 | InRS41|/TP4 | InRS42 |/TP4 HVT42/HOI HVT42/HOS 0.07292 0.04485 0.48089 0.30500

The following contents may be deduced from Table 9 and Table 10.

Related inflection point values of fifth embodiment (Primary referencewavelength: 555 nm) HIF111 0.48760 HIF111/HOI 0.21200 SGI111 0.070891 |SGI111 |/(| SGI111 | + TP1) 0.13706 HIF211 0.62939 HIF211/HOI 0.27365SGI211 −0.07087 | SGI211 |/(| SGI211 | + TP2) 0.13364 HIF311 0.56009HIF311/HOI 0.24352 SGI311 −0.06315 | SGI311 |/(| SGI311 | + TP3) 0.11220HIF312 0.77246 HIF312/HOI 0.33585 SGI312 −0.09737 | SGI312 |/(| SGI312| + TP3) 0.16309 HIF321 0.64104 HIF321/HOI 0.27871 SGI321 −0.24895 |SGI321 |/(| SGI321 | + TP3) 0.33253 HIF322 1.03558 HIF322/HOI 0.45025SGI322 −0.39259 | SGI322 |/(| SGI322 | + TP3) 0.43998 HIF411 0.31567HIF411/HOI 0.13725 SGI411 0.019127 | SGI411 |/(| SGI411 | + TP4) 0.04199HIF412 1.02179 HIF412/HOI 0.44426 SGI412 0.008138 | SGI412 |/(| SGI412| + TP4) 0.01831 HIF413 1.34644 HIF413/HOI 0.58541 SGI413 −0.02334 |SGI413 |/(| SGI413 | + TP4) 0.05076 HIF421 0.40648 HIF421/HOI 0.17673SGI421 0.092317 | SGI421 |/(| SGI421 | + TP4) 0.17461

The Sixth Embodiment (Embodiment 6)

Please refer to FIG. 6A, FIG. 6B, and FIG. 6C, FIG. 6A is a schematicview of the optical image capturing system according to the sixthEmbodiment of the present application, FIG. 6B is longitudinal sphericalaberration curves, astigmatic field curves, and an optical distortioncurve of the optical image capturing system in the order from left toright according to the sixth Embodiment of the present application, andFIG. 6C is a characteristic diagram of modulation transfer according tothe sixth embodiment of the present application. As shown in FIG. 6A, inorder from an object side to an image side, the optical image capturingsystem includes a first lens element 610, an aperture stop 600, a secondlens element 620, a third lens element 630, a fourth lens element 640,an IR-bandstop filter 670, an image plane 680, and an image sensingdevice 690.

The first lens element 610 has positive refractive power and it is madeof plastic material. The first lens element 610 has a convex object-sidesurface 612 and a concave image-side surface 614, both of theobject-side surface 612 and the image-side surface 614 are aspheric, andthe object-side surface 612 and the image-side surface 614 have aninflection point respectively.

The second lens element 620 has positive refractive power and it is madeof plastic material. The second lens element 620 has a concaveobject-side surface 622 and a convex image-side surface 624, and both ofthe object-side surface 622 and the image-side surface 624 are aspheric.

The third lens element 630 has negative refractive power and it is madeof plastic material. The third lens element 630 has a concaveobject-side surface 632 and a convex image-side surface 634, and both ofthe object-side surface 632 and the image-side surface 634 are aspheric.The image-side surface 634 has an inflection point.

The fourth lens element 640 has positive refractive power and it is madeof plastic material. The fourth lens element 640 has a convexobject-side surface 642 and a concave image-side surface 644, both ofthe object-side surface 642 and the image-side surface 644 are aspheric.The object-side surface 642 has two inflection points and the image-sidesurface 644 has an inflection point.

The IR-bandstop filter 670 is made of glass material without affectingthe focal length of the optical image capturing system and it isdisposed between the fourth lens element 640 and the image plane 680.

In the optical image capturing system of the sixth Embodiment, focallengths of the second lens element 620, the third lens element 630 andthe fourth lens element 640 are f2, f3 and f4, respectively. Thefollowing relations are satisfied: |f2|+|f3|=7.6703 mm and|f1|+|f4|=7.7843 mm.

In the optical image capturing system of the sixth Embodiment, a sum offocal lengths of all lens elements with positive refractive power isΣPP. The following relations are satisfied: ΣPP=f1+f3. Hereby, it isfavorable for allocating the positive refractive power of the first lenselement 610 to other positive lens elements and the significantaberrations generated in the process of moving the incident light can besuppressed.

In the optical image capturing system of the sixth Embodiment, a sum offocal lengths of all lens elements with negative refractive power isΣNP. The following relations are satisfied: ΣNP=f2+f4. Hereby, it isfavorable for allocating the negative refractive power of the fourthlens element 640 to other negative lens elements.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with half frequencies(MTF values) at the optical axis on the image plane, 0.3 HOI and 0.7 HOIare respectively denoted by MTFH0, MTFH3 and MTFH7. The followingrelations are satisfied: MTFH0 is about 0.52, MTFH3 is about 0.38 andMTFH7 is about 0.27.

Please refer to the following Table 11 and Table 12.

The detailed data of the optical image capturing system of the sixthEmbodiment is as shown in Table 11.

TABLE 11 Data of the optical image capturing system f = 3.4320 mm; f/HEP= 2.28; HAF = 39.5498 deg; tan(HAF) = 0.8258 Surface# Curvature RadiusThickness Material Index Abbe # Focal length 0 Object Plano 600 mm 1Shading sheet Plano 0.000 2 Ape. Stop/Lens 1 1.509818182 0.618 Plastic1.535 56.07 3.318 3 8.53969299 0.329 4 Lens 2 −6.014903199 0.354 Plastic1.535 56.07 5.358 5 −1.984502862 0.116 6 Lens 3 −1.059010347 0.400Plastic 1.642 22.46 −2.313 7 −4.151190913 0.209 8 Lens 4 1.1523146690.971 Plastic 1.535 56.07 4.467 9 1.5669645 0.174 10 IR-bandstop filterPlano 0.610 BK_7 1.517 64.13 1E+18 11 Plano 0.670 12 Image plane Plano0.000 Reference wavelength = 555 nm, shield position: clear aperture(CA) of the first plano = 0.72 mm, clear aperture (CA) of the fourthplano = 0.72 mm.

As for the parameters of the aspheric surfaces of the sixth Embodiment,reference is made to Table 12.

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 6 7 k =  1.916080E+00−9.900000E+01  3.126612E+01 −7.965379E+00 −8.303619E−01 −6.965851E+00 A4= −1.049827E−01 −7.009159E−02 −1.451689E−01 −4.538029E−01 −5.412535E−01−1.203501E+00 A6 =  5.814123E−01  1.328381E−01  6.303788E−01 1.530283E+00  2.791713E+00  3.666830E+00 A8 = −6.718107E+00−9.116008E−01 −1.132911E+01 −1.236917E+01 −1.513262E+01 −8.896333E+00A10 =  3.531928E+01  7.640451E−01  6.805609E+01  4.610285E+01 5.138291E+01  1.655336E+01 A12 = −1.101217E+02  3.051780E+00−2.379915E+02 −9.647195E+01 −9.520918E+01 −2.064112E+01 A14 = 2.064916E+02 −9.347255E+00  4.983122E+02  1.170989E+02  9.234444E+01 1.655931E+01 A16 = −2.297285E+02  8.045808E+00 −6.309790E+02−7.956394E+01 −3.388934E+01 −8.186992E+00 A18 =  1.385918E+02−1.221506E+00  4.484590E+02  2.631311E+01 −1.040105E+01  2.273253E+00A20 = −3.506966E+01  1.406385E−01 −1.380228E+02 −3.193777E+00 8.371347E+00 −2.718499E−01 Surface # 8 9 k = −1.187975E+01−7.017602E−01 A4 = −4.135674E−01 −2.642810E−01 A6 =  2.543691E−01 1.378942E−01 A8 = −2.660257E−03 −6.371856E−02 A10 = −1.503202E−01 2.245800E−02 A12 =  1.195738E−01 −6.023087E−03 A14 = −4.203653E−02 1.127358E−03 A16 =  7.846661E−03 −1.323108E−04 A18 = −7.498286E−04 8.321783E−06 A20 =  2.899932E−05 −2.161104E−07

In the sixth Embodiment, the presentation of the aspheric surfaceformula is similar to that in the first embodiment. Besides, thedefinitions of parameters in following tables are equal to those in thefirst embodiment, so the repetitious details will not be given here.

The following contents may be deduced from Table 11 and Table 12.

Sixth embodiment (Primary reference wavelength: 555 nm) ETP1 ETP2 ETP3ETP4 ED12/ED23 SED 0.436  0.275  0.521  1.027  3.324  0.676  ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ED23/ED34 SETP 0.705  0.775  1.303  1.057 0.130  2.258  ETL EBL EIN EIR PIR STP 4.275  1.342  2.934  0.062  0.174 2.343  EIN/ETL SETP/EIN EIR/PIR EBL/BL BL SETP/STP 0.686  0.770  0.354 0.9230  1.4540  0.964  ED12 ED23 ED34 ED12/IN12 ED23/IN23 ED34/IN340.187  0.056  0.432  0.570  0.488  2.071  InRS41 InRS42 HVT41 HVT42 |ODT | % | TDT | % −0.19362  −0.25529  0.61419 1.21734 2.01839 1.61834 |f/f1 | | f/f2 | | f/f3 | | f/f4 | | f1/f2 | | f2/f3 | 1.03444 0.640591.48400 0.76840 0.61927 2.31660 ΣPPR ΣNPR ΣPPR/| ΣNPR | ΣPP ΣNP f1/ΣPP2.51843 1.40899 1.78740 1.00509 9.82409 3.30099 f4/ΣNP IN12/f IN23/fIN34/f TP3/f TP4/f 0.45465 0.09578 0.03366 0.06079 0.11643 0.28302 InTLHOS HOS/HOI InS/HOS InTL/HOS ΣTP/InTL 2.99601 4.44999 1.55812 0.956730.67326 0.78208 (TP1 + IN12)/TP2 (TP4 + IN34)/TP3 TP1/TP2 TP3/TP4IN23/(TP2 + IN23 + TP3) 2.67357 2.95298 1.74532 0.41138 0.13291 | InRS41|/TP4 | InRS42 |/TP4 HVT42/HOI HVT42/HOS 0.19933 0.26283 0.42624 0.27356

The following contents may be deduced from Table 11 and Table 12.

Related inflection point values of sixth Embodiment (Primary referencewavelength: 555 nm) HIF111 0.74316 HIF111/HOI 0.26021 SGI111 0.18567 |SGI111 |/(| SGI111 | + TP1) 0.23101 HIF121 0.32842 HIF121/HOI 0.11499SGI121 0.00534 | SGI121 |/(| SGI121 | + TP1) 0.00857 HIF321 0.70196HIF321/HOI 0.24579 SGI321 −0.15758 | SGI321 |/(| SGI321 | + TP3) 0.28283HIF411 0.29817 HIF411/HOI 0.10440 SGI411 0.03024 | SGI411 |/(| SGI411| + TP4) 0.03019 HIF412 1.21277 HIF412/HOI 0.42464 SGI412 −0.12205 |SGI412 |/(| SGI412 | + TP4) 0.11163 HIF421 0.55723 HIF421/HOI 0.19511SGI421 0.07815 | SGI421 |/(| SGI421 | + TP4) 0.07446

The above-mentioned descriptions represent merely the exemplaryembodiment of the present disclosure, without any intention to limit thescope of the present disclosure thereto. Various equivalent changes,alternations or modifications based on the claims of present disclosureare all consequently viewed as being embraced by the scope of thepresent disclosure.

What is claimed is:
 1. An optical image capturing system, from an objectside to an image side, comprising: a first lens element with refractivepower; a second lens element with refractive power; a third lens elementwith refractive power; a fourth lens element with refractive power; andan image plane; wherein the optical image capturing system consists offour lens elements with refractive power, at least two lens elementsamong the first through fourth lens elements respectively have at leastone inflection point on at least one surface thereof, at least one ofthe first through fourth lens elements has positive refractive power, anobject-side surface and an image-side surface of the fourth lens elementare aspheric, focal lengths of the first through fourth lens elementsare f1, f2, f3 and f4 respectively, a focal length of the optical imagecapturing system is f, an entrance pupil diameter of the optical imagecapturing system is HEP, a distance from an axial point on anobject-side surface of the first lens element to an axial point on theimage plane is HOS, thicknesses in parallel with an optical axis of thefirst lens element, the second lens element, the third lens element andthe fourth lens element at height ½ HEP respectively are ETP1, ETP2,ETP3 and ETP4, a sum of ETP1 to ETP4 described above is SETP,thicknesses of the first lens element, the second lens element, thethird lens element and the fourth lens element on the optical axisrespectively are TP1, TP2, TP3 and TP4, a sum of TP1 to TP4 describedabove is STP, and the following relations are satisfied: 1.2≤f/HEP≤2.3,0.5≤HOS/f≤3 and 0.5≤SETP/STP<1.
 2. The optical image capturing system ofclaim 1, wherein a horizontal distance in parallel with the optical axisfrom a coordinate point on the object-side surface of the first lenselement at height ½ HEP to the image plane is ETL, a horizontal distancein parallel with the optical axis from a coordinate point on theobject-side surface of the first lens element at height ½ HEP to acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP is EIN, and the following relation is satisfied:0.2≤EIN/ETL<1.
 3. The optical image capturing system of claim 1, whereina horizontal distance in parallel with the optical axis from acoordinate point on the object-side surface of the first lens element atheight ½ HEP to a coordinate point on the image-side surface of thefourth lens element at height ½ HEP is EN, the thickness in parallelwith the optical axis of the first lens element at height ½ HEP is ETP1,the thickness in parallel with the optical axis of the second lenselement at height ½ HEP is ETP2, the thickness in parallel with theoptical axis of the third lens element at height ½ HEP is ETP3, thethickness in parallel with the optical axis of the fourth lens elementat height ½ HEP is ETP4, the sum of ETP1 to ETP4 described above isSETP, and the following relation is satisfied: 0.3≤SETP/EIN≤0.8.
 4. Theoptical image capturing system of claim 1, wherein the optical imagecapturing system comprises a light filtration element, the lightfiltration element is located between the fourth lens element and theimage plane, a distance in parallel with the optical axis from acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP to the light filtration element is EIR, a distance inparallel with the optical axis from an axial point on the image-sidesurface of the fourth lens element to the light filtration element isPIR, and the following relation is satisfied: 0.2≤EIR/PIR≤0.8.
 5. Theoptical image capturing system of claim 1, wherein at least one of thefour lens elements has at least two inflection points on at least onesurface.
 6. The optical image capturing system of claim 1, wherein theoptical image capturing system has a maximum height of image denoted byHOI perpendicular to the optical axis on the image plane, contrasttransfer rates of modulation transfer with half frequencies (MTF values)at the optical axis on the image plane, 0.3 HOI and 0.7 HOI arerespectively denoted by MTFH0, MTFH3 and MTFH7, and the followingrelations are satisfied: MTFH0≥0.4, MTFH3≥0.3 and MTFH7≥0.2.
 7. Theoptical image capturing system of claim 1, wherein a half of maximumview angle of the optical image capturing system is HAF, and thefollowing relation is satisfied: 0.4≤| tan (HAF)|≤3.0.
 8. The opticalimage capturing system of claim 1, wherein a horizontal distance inparallel with the optical axis from a coordinate point on the image-sidesurface of the fourth lens element at height ½ HEP to the image plane isEBL, a horizontal distance in parallel with the optical axis from anaxial point on the image-side surface of the fourth lens element to theimage plane is BL, and the following relation is satisfied:0.5≤EBL/BL<1.
 9. The optical image capturing system of claim 1, furthercomprising an aperture stop, a distance from the aperture stop to theimage plane on the optical axis is InS, an image sensing device isdisposed on the image plane, a half of a diagonal of an effectivedetection field of the image sensing device is HOI, and the followingrelations are satisfied: 0.5≤InS/HOS≤1.1 and 0≤HIF/HOI≤0.9.
 10. Anoptical image capturing system, from an object side to an image side,comprising: a first lens element with positive refractive power; asecond lens element with refractive power; a third lens element withrefractive power; a fourth lens element with negative refractive power;and an image plane; wherein the optical image capturing system consistsof four lens elements with refractive power, at least two lens elementsamong the four lens elements respectively have at least one inflectionpoint on at least one surface thereof, an object-side surface and animage-side surface of the fourth lens element are aspheric, focallengths of the first through fourth lens elements are f1, f2, f3 and f4respectively, a focal length of the optical image capturing system is f,an entrance pupil diameter of the optical image capturing system is HEP,a distance from an axial point on an object-side surface of the firstlens element to an axial point on the image plane is HOS, a half ofmaximum view angle of the optical image capturing system is HAF, ahorizontal distance in parallel with the optical axis from a coordinatepoint on the object-side surface of the first lens element at height ½HEP to the image plane is ETL, a horizontal distance in parallel withthe optical axis from a coordinate point on the object-side surface ofthe first lens element at height ½ HEP to a coordinate point on theimage-side surface of the fourth lens element at height ½ HEP is EIN,and the following relations are satisfied: 1.2≤f/HEP≤6.0, 0.5≤HOS/f≤3.0,0.4≤| tan(HAF)|2.2 and 0.2≤EIN/ETL<1.
 11. The optical image capturingsystem of claim 10, wherein a horizontal distance in parallel with theoptical axis from a coordinate point on the image-side surface of thethird lens element at height ½ HEP to a coordinate point on theobject-side surface of the fourth lens element at height ½ HEP is ED34,a distance from the third lens element to the fourth lens element on theoptical axis is IN34, and the following relation is satisfied:1<ED34/IN34≤50.
 12. The optical image capturing system of claim 10,wherein a horizontal distance in parallel with the optical axis from acoordinate point on the image-side surface of the second lens element atheight ½ HEP to a coordinate point on the object-side surface of thethird lens element at height ½ HEP is ED23, a distance from the secondlens element to the third lens element on the optical axis is IN23, andthe following relation is satisfied: 0.1≤ED23/IN23<1.
 13. The opticalimage capturing system of claim 10, wherein a horizontal distance inparallel with the optical axis from a coordinate point on the image-sidesurface of the first lens element at height ½ HEP to a coordinate pointon the object-side surface of the second lens element at height ½ HEP isED12, a distance from the first lens element to the second lens elementon the optical axis is IN12, and the following relation is satisfied:0.1≤ED12/IN12≤5.
 14. The optical image capturing system of claim 10,wherein a thickness in parallel with the optical axis of the first lenselement at height ½ HEP is ETP1, a thickness of the first lens elementon the optical axis is TP1, and the following relation is satisfied:0.4≤ETP1/TP1≤0.8.
 15. The optical image capturing system of claim 10,wherein a thickness in parallel with the optical axis of the second lenselement at height ½ HEP is ETP2, a thickness of the second lens elementon the optical axis is TP2, and the following relation is satisfied:0.5≤ETP2/TP2≤3.0.
 16. The optical image capturing system of claim 10,wherein a thickness in parallel with the optical axis of the third lenselement at height ½ HEP is ETP3, a thickness of the third lens elementon the optical axis is TP3, and the following relation is satisfied:0.5≤ETP3/TP3≤3.0.
 17. The optical image capturing system of claim 10,wherein a thickness in parallel with the optical axis of the fourth lenselement at height ½ HEP is ETP4, a thickness of the fourth lens elementon the optical axis is TP4, and the following relation is satisfied:0.5≤ETP4/TP4≤3.0.
 18. The optical image capturing system of claim 10,wherein a distance from the first lens element to the second lenselement on the optical axis is IN12, and the following relation issatisfied: 0<IN12/f≤0.3.
 19. The optical image capturing system of claim10, wherein the optical image capturing system satisfies the followingrelations: 0.001<|f/f1|≤1.5, 0.01≤|f/f2|≤0.9, 0.01≤|f/f3|≤1.5 and0.01≤|f/f4|≤3.0.
 20. An optical image capturing system, from an objectside to an image side, comprising: a first lens element with positiverefractive power; a second lens element with refractive power; a thirdlens element with refractive power and at least one surface among anobject-side surface and an image-side surface of the third lens elementhaving at least one inflection point; a fourth lens element withnegative refractive power and at least one surface among an object-sidesurface and an image-side surface of the fourth lens element having atleast one inflection point; and an image plane; wherein the opticalimage capturing system consists of four lens elements with refractivepower, focal lengths of the first through fourth lens elements are f1,f2, f3 and f4 respectively, a focal length of the optical imagecapturing system is f, an entrance pupil diameter of the optical imagecapturing system is HEP, a half of maximum view angle of the opticalimage capturing system is HAF, a distance from an axial point on anobject-side surface of the first lens element to an axial point on theimage plane is HOS, a horizontal distance in parallel with the opticalaxis from a coordinate point on the object-side surface of the firstlens element at height ½ HEP to the image plane is ETL, a horizontaldistance in parallel with the optical axis from a coordinate point onthe object-side surface of the first lens element at height ½ HEP to acoordinate point on the image-side surface of the fourth lens element atheight ½ HEP is EN, and the following relations are satisfied:1.2≤f/HEP≤2.3, 0.5≤HOS/f≤2.5, 0.4≤| tan(HAF)|≤2.2 and 0.2≤EIN/ETL<1. 21.The optical image capturing system of claim 20, wherein a horizontaldistance in parallel with the optical axis from a coordinate point onthe image-side surface of the fourth lens element at height ½ HEP to theimage plane is EBL, a horizontal distance in parallel with the opticalaxis from an axial point on the image-side surface of the fourth lenselement to the image plane is BL, and the following relation issatisfied: 0.5≤EBL/BL<1.
 22. The optical image capturing system of claim21, wherein a horizontal distance in parallel with the optical axis froma coordinate point on the image-side surface of the third lens elementat height ½ HEP to a coordinate point on the object-side surface of thefourth lens element at height ½ HEP is ED34, a distance from the thirdlens element to the fourth lens element on the optical axis is IN34, andthe following relation is satisfied: 1<ED34/IN34≤50.
 23. The opticalimage capturing system of claim 20, wherein a distance from the thirdlens element to the fourth lens element on the optical axis is IN34, andthe following relation is satisfied: 0<IN34/f≤0.3.
 24. The optical imagecapturing system of claim 23, wherein the optical image capturing systemsatisfies the following relation: 0 mm<HOS≤20 mm.
 25. The optical imagecapturing system of claim 23, further comprising an aperture stop, animage sensing device and a driving module, the image sensing device isdisposed on the image plane and with at least five million pixels, adistance from the aperture stop to the image plane on the optical axisis InS, the driving module and the four lens elements may couple to eachother and movements are produced for the four lens elements, and thefollowing relation is satisfied: 0.5≤InS/HOS≤1.1.